BattleTech mechs: tips for constructing the best build

Everything you need to know to build and outfit the perfect lance

two mechs stand in a pond

If you’ve spent any significant time with Harebrained Schemes’ BattleTech  you’ve undoubtedly had a sense that just as much of the game takes place in the MechLab as on the field. There are interesting tactical decisions to be made certainly and BattleTech packs a lot of detail into its combat encounters. But building your lance the right way and picking the missions best suited to your lance is just as important – if not more so – than proper positioning and timing in a fight.

These mech building tips should provide you with plenty of guidance for crafting your ideal mech. There aren’t any real hard and fast rules when creating your lance because everything in BattleTech is situational. We’ll go over a few general principles to bear in mind, but it’s important to remember that these can always be superseded in certain circumstances. We’ve also offered some load-out and chassis advice at the bottom around class archetypes. Feel free to tweak at your leisure, though.

We’ll continue to update this guide as we learn more about BattleTech, but the rules below should apply to BattleTech as of the Heavy Metal expansion and the latest Patch.

BattleTech Mech-building tips

Speaking of Heavy Metal, BattleTech’s latest and final expansion added a total of ten new battlemech chassis to customize to your hearts’ content (not to mention two free ones with the accompanying patch). There are also new weapons and specialised hardware, so the design space for lances is now officially huge. The previous DLC was Urban Warfare which not only added the new Raven and Javelin mechs, but also changed the game’s balance by weaving ‘electronic warfare’ in the form of interesting, battlefield-changing equipment. The Flashpoint expansion also added the Hatchetman, Crab, and Cyclops ‘Mechs to the mix.

We’ve taken all this as well as where the free-patches have taken the meta and put together a guide to help you create the perfect Lance.

a big mech is firing laser weapons at an unseen enemy

Principle 1: Bigger is better

Particularly in the early stages of the base campaign, you’re generally going to want to field the heaviest BattleMechs you have available. There are certainly roles for lighter, faster ‘Mechs, like the Jenner and Firestarter, but when you’ve only got a few key MechWarriors available, you can’t afford the risk of putting them in something that can’t be armored as heavily as possible.

More like this: Read our other Battletech guide

Bigger ‘Mechs usually mean more hardpoints for weapons, and that means you can afford to equip them as generalists for early missions. Being able to be flexible early on is important, and fielding ‘Mechs with a wide range of weapons will help out a lot in the beginning missions. ‘Mechs tend to get substantially more survivable as you move up in tonnage, and that’s also crucial in the early game when money is tight.

Heavy Metal does change this calculation up a bit, as the new COIL weapon was specifically designed to keep lighter, speedier ‘Mechs viable further into the game. Having a light frame ‘Mech such as a Flea or Locust equipped with COIL beams (which build up damage-dealing capability based on how far a ‘Mech travels in a turn) can open up incredibly valuable flanking and harrassing opportunities on the battlefield.

a man stands next to a big mech in a repair bay

Basic Principle 2: Specialize (to a point)

Once the financial restraints are loosened up a bit in the campaign, you’ll have more freedom to kit out your ‘Mechs for specific roles. Each BattleMech chassis has a stock role that your engineer, Yang Virtanen, describes in notes you can find in the info panel. That includes a default weapons loadout template you can follow, which is a very helpful starting point for most ‘Mech builds.

However, you’re free to ignore as much of Yang’s advice as you wish and moving away from his preference for medium lasers can allow you to customize a ‘Mech for a much more specialist role. In most cases, think of these loadouts as existing solely for a particular type of mission: a fast, long-range sniper built on a Jenner chassis, for instance, can be incredibly helpful in assassination missions, but its low drop-in tonnage will make it nearly useless in base assaults and straight-up battles.

Related: The best mech games on PC

Your heaviest ‘Mechs are best when you give them a decent spread between ballistic, missile, and energy weapons. It doesn’t hurt to have a close-range support machine gun or laser in the mix, either. But be aware of the mission type you’re heading into, and the environment. If you’re heading into a hot biome, you’ll want to either swap energy weapons out for ballistic or missile weapons or add heat sinks. Conversely, if you’ve got a mission in tundra, you can drop some heat sinks and add all the medium lasers and AC/10s you can carry because PPCs have been basically rendered useless by recent balance patches.

The new ‘Mechs introduced in Heavy Metal tend to have built-in technologies that are adapted for more specific roles than you may be used to with the rest of the lance. That can tie your hands a bit when it comes to trying to adapt them for different roles, but the advantages you get from the new Special Techs tend to outweigh the downsides – if you want to field an Archer or Rifleman, for example, consider refitting other long-range ‘Mechs in your lance for support or close-in duty.

a list of available contracts

Basic Principle 3: Pick The right missions

You’ve almost always got a choice of three missions to take on in BattleTech, and these are randomly selected from a series of types, as I mentioned above. They’ll all involve ‘Mech combat in some way, but what you’re up against and how each battle develops is heavily dependent on the kind of mission you deploy on. Some mission types have strict fail conditions, and the mission will end abruptly if you hit one of those – let an assassination target make it to his dust-off zone, and that’s the mission scrubbed, with no chance to recoup your losses with salvage or bonus destruction.

With a squad of heavy, generalist ‘Mechs, you’ll be well-equipped to take on battles and base destruction missions. You’ll want to make sure you have faster ‘Mechs with sniper loadouts readied before you go on assassinations or convoy interceptions, though.

Don’t be afraid to wait a few days on a contract while Yang’s crew refits your lance, either. Unless you’re facing imminent bankruptcy, it’s far more important to field a properly-equipped team than it is to field a lance right away. The consequences for taking the wrong equipment into the field can be costly – ‘Mech repairs cost you time and money, and MechWarriors can’t help you out from sick bay.

a mech stands in a bay in the backdrop, a list of mech chassis in the fore.

Basic Principle 4: salvage first, store second

Depending on how you negotiate your contracts, you’ll usually be pulling in some salvage after a mission. Pay attention to what’s available on the salvage screen! Your contract will dictate how many pieces you can call “dibs” on, and it’s worth going through the full list. Often, you’ll want to snap up BattleMech salvage – even when it’s not a chassis you want, they’re incredibly valuable to sell once you have a complete set. But you’ll also want to be on the lookout for rare, powerful weapons and gear. You’ll also want to be aware of equipment and ammo racks you’ve lost in combat, and salvage can be a chance to replace these cheaply.

With Flashpoint, some of how salvage and payouts work is going to change. Harebrained is altering the way reputation works, and the multi-mission Flashpoints will offer bonus rewards beyond what you negotiate for when accepting the contracts. According to this developer diary, the team has taken steps to have the loot you gain from these missions and in stores make sense with the location you find them, so finding and buying specialized parts is now a much less random affair.

Related: The best turn-based strategy games on PC

For now, though, here’s a very rough wish list of spare parts you should try to have lying around at all times.


  • 4x AC/2
  • 4x AC/5
  • 2x AC/10
  • 2x AC/20
  • 6x M Laser
  • 6x LRM5
  • 2x Snub-nose PPC
  • 2x COIL
  • 4x LRM10
  • 4x LRM15
  • 4x LRM20
  • 4x SRM 4
  • 4x SRM 6
  • 4x S Laser
  • 4x MG


  • Heat sinks: Always be on the lookout for these, in particular for upgraded, more efficient modules. Thermal exchangers will cut your overall heat generated by a percentage, and they’re worth their weight in gold in any energy-heavy build. Basically, always have some spares around and do not forget to include heat sinking in a new ‘Mech build if you’re carrying energy weapons Conversely, don’t add superfluous heat sinks – you’ll wind up with a ‘Mech that’s either under-gunned or under-armoured.
  • Cockpits: A BattleMech’s cockpit is its most sensitive area – a lucky shot can take out a pilot and take both out of action in an instant. That means you’ll want to have cockpit upgrades installed whenever possible, especially for senior staff. Keep an eye out for these. Cockpit upgrades can grant wound resistance, or in the case of rangefinders, add to your view distance.
  • Jump jets: Essential for outfitting a new scout or other fast-mover in your team. These lighter ‘Mechs can get into trouble quick and odds are you’ll have to replace them more often than you’d like. Jump jets give scouts and assault builds the ability to flank and duck back into cover on a moment’s notice, so always have extras handy if possible.
  • Electronic Warfare: The Urban Warfare expansion adds two new pieces of kit in the form of Electronic Countermeasures and Active Probe. These both have the potential to give your lance the edge in any fight, but they’re particularly helpful in the new city biome, where sightlines can be easily broken and indirect fire tends to reign supreme. The ECM suite in particular is surprisingly powerful, and despite its in-game description it’s able to effectively ‘cloak’ a group of mechs around whoever’s carrying it. This makes everyone much harder to hit, and it’s worthwhile mounting one on a lighter frame – or just taking the stock Raven 1X out with your lance when you’re fighting battles against seasoned opponents. Try to always have at least one ‘mech in reserve equipped with an Electronic Warfare loadout.

BattleTech Weapons – Do’s and Don’ts

Let’s talk for a bit about the types of weapons you have available in BattleTech, and the trade-offs for each one. There are three main categories of weapons (plus support weapons, which I consider a special class), and each has its own set of pros and cons. Some are better for specific missions, some require you to carry ammunition, and some of them provide an extra bit of control over the battle space. Each individual weapon type in BattleTech can also be found in varying degrees of rarity, and as the rarity of a weapon increases, so does its lethality and value in combat.

several mechs stand on a shore, one if firing laser weapons

Energy weapons

Energy weapons include all lasers and PPCs. They’re deceptively easy to use, and can be devastating at the proper ranges. You don’t have to carry any additional ammo for them, but the big limitation is heat buildup.

Yang likes putting Medium Lasers on just about every ‘Mech chassis, and unless you’re running a specialty build, treating the M Laser as the default is a good idea. I’ve found (and it seems that the community agrees) that the Large Laser is usually not worth it – it’s got a much better optimum range than the Medium, but the heat management issues it brings with it usually make it a poor choice.

PPC’s used to be good, but they’ve been nerfed into oblivion since launch. Use M Lasers instead; or better yet, autocannon 10s.

If you have Heavy Metal, then you now have access to the Snub-nose PPC, which is effectively a PPC shotgun, and the COIL beam, which scales up in damage for each hex a ‘Mech travels per turn. You’ll want to use these on lighter ‘Mechs, but be aware that they take up a relatively high number of hardpoint slots, making them vulnerable to critical hits. Fortunately, the COIL beams aren’t heavy, which means you can add more armour to the area where you have it installed.

a big mech with two ballistic guns instead of hands

Ballistic weapons

Ballistic weapons, as the name suggests, are your conventional, direct-fire guns – autocannons and gauss rifles. They generate relatively little heat compared to energy weapons, but you have to carry ammunition for them – and not only can you run out of ammo, but your ammo pods can be destroyed in combat, causing critical damage to your ‘Mechs. That’s why it’s important to never, ever mount ammo pods on the central hardpoints of your ‘Mechs – that’s where the cockpit is, and an ammo explosion is almost guaranteed to kill your MechWarrior if it’s mounted with the cockpit.

While medium and large lasers get increasingly accurate with each shot, ballistic weapons become less accurate when they’re fired multiple turns in a row: this is to simulate weapon recoil.

With Heavy Metal, the ballistic weapons category has expanded to include the indirect-fire Mech Mortar. As you might expect, these fire a shell on an arcing trajectory, which then explodes on impact, damaging everything in an area of effect. The explosion does damage to each component of ‘Mechs caught in the blast, except for the heads. It’s a great weapon to have with you if you’re going to be up against a lot of lighter ‘Mechs, as it can finish off a whole enemy lance of them if you time it right. On the downside, though, it’s inaccurate and not particularly effective against undamaged enemies – so try to soften them up a bit first.

If that sounds good, you’ll love the new Bull Shark ‘Mech introduced in Heavy Metal, too. It can mount the fearsome Thumper Cannon, which is BattleTech’s first and only field artillery piece.

a profile of a mech with a shoulder mounted missile launcher

Missile weapons



BattleTech uses the term "support weapons" for three specific weapons that primarily work in conjunction with melee attacks: the machine gun, the flamer, and the small laser. Each has its own characteristics, but generally they're of limited use. However, for Brawlers and Juggernauts (see below), these can add even more devastation to a punch, and that can make all the difference - particularly late game.

Machine guns will do bonus damage against exposed structures, and flamers will limit the performance of an enemy 'Mech by overheating it. The small laser simply adds another dose of damage, and it doesn't build up much heat.

    Missiles are particularly handy (and, conversely, annoying when they’re being fired at you) because of their ability to fire without line of sight. If you’ve got a spotter with the Tactics skill, you can launch LRMs from behind hills at targets who can’t strike back, which makes long-range missiles essential for the fire support role described below. Missiles do a lot of stability damage (more than anything else in the game) so they’re your go-to if you’re looking for a knockdown.

    A crucial thing to remember about missiles is how the percentage chance to hit changes – the probability is calculated for each individual projectile, so you usually have a better chance at some missiles hitting. The easiest way to think about this is that a 35% “chance to hit” with missiles roughly translates to “you’ll probably do about 35% of your maximum damage.”

    The number after LRM or SRM indicates how many missiles are fired at once from the pod, so for instance an LRM20 fires a volley of twenty missiles at once. Naturally, this also means it’s going to plow through your ammo quickly, so plan accordingly.

    BattleTech Builds

    Here’s the meat of this guide: the blueprints for your ideal BattleMech lance. Unfortunately, because of the way BattleTech works, there is no ideal guide for ‘Mech building. BattleTech is a game based on improvisation and adaptation: between finances, biome type, mission variety, and equipment availability, you’ll rarely – if ever – be fielding the ideal mix of ‘Mechs.

    What you can do, however, is equip the ‘Mechs you have to fill useful roles on a team. As I noted at the top, there aren’t hard and fast rules about doing this, and even holding guide in hand, you’ll have to adapt these designs in order to fit your situation at any given time.

    One more beginner tip: Use the ‘Strip Armour’ button when you start putting your build together. Once you’ve got everything you want positioned on the chassis, use the ‘Max Armour’ button replace the plating up to the maximum tonnage allowed on the frame. You can fiddle with the distribution a bit, which is often a good idea because by default it will assign armor as evenly as it can.

    a small scout mech sitting atop an urban building


    Suggested chassis: Raven, Commando, Locust, Jenner, Panther, Flea

    The big – and possibly sole – advantage of light (20-35 ton) BattleMechs is their initiative of 4, which means they’ll go first in the turn order. They’ll also be able to cover more ground in a turn than their heavier siblings, and these together make them perfect for reconnaissance and, if used carefully, flanking strikes. Their fragility is offset by their high speed, so remember that if you aren’t moving, you’re giving up your best defense, which is evasion bonuses. Use these BattleMechs to spot enemies for your indirect fire platforms and look for opportunities to take out vehicles. You can put heavier ‘Mechs like the Cicada into this role, but you’ll lose that extra point of initiative if you go with anything beefier than a Panther.

    For equipment, rangefinders are great for scouts, as they’ll give them an extra bit of vision that you can use to direct fire from your long-range artillery. Consider outfitting jump jets (and heat sinks), but they’re not strictly necessary. Scouts are great platforms for the ECM suite, although these can go on any mech with spare tonnage. Weapons-wise, stick to basics – a long-range autocannon or a pair of M Lasers will be plenty. Remember, you’re not going to be going head to head with these ‘Mechs.


    Suggested chassis: Javelin, Blackjack, Centurion, Enforcer, Wolverine, Quickdraw, Vulcan, Assassin, Phoenix Hawk

    Particularly for missions where you’ll need to intercept or assassinate moving targets, you’re going to want fast-attack ‘Mechs that are outfitted with some knockdown power. The striker is that platform, and when you’re customising a chassis for this role, think high speed and high DPS. A good example here is the 1R variant of the Vindicator – the stock configuration carries a medium laser, LRM-5, and PPC, along with jump jets to quickly change positions. Ideally, you’ll want these BattleMechs to be on the quicker side and having enough firepower to be effective in the role means they have to cut back on armor.

    You have your choice of weapons with strikers, but the idea is that you’ll want them at medium range for most fights. Grouped medium lasers and autocannons are good choices for strikers.

    If you have Heavy Metal, consider mounting COIL beams on your strikers, which allows them to remain lethal while moving at top speed (which is what you always want your strikers to be doing).

    a mech slices through another, which explodes


    Suggested chassis: Vindicator, Hunchback, Kintaro, Cataphract, Orion, Stalker, Hatchetman, Crab, Warhammer

    Many missions in BattleTech, particularly story missions, will focus on straight up showdowns between lances, and this is what you want brawlers for. While other roles will try to move around the periphery of the fighting, brawlers are the ‘Mechs that you’ll want dead centre, as your gunslingers. Pick chassis that have enough hardpoints to mount a lethal number of weapons and go big wherever you can: big racks of SRMs, PPCs, AC20s and medium or short-range lasers all work well on brawlers.

    Consider also mounting support weapons like machine guns or flamers on your brawlers, but keep in mind that many of the chassis best-suited for this job will run into heat management issues. Install heat sinks on these bad boys if you’re using a lot of energy weapons or heading into badlands or lunar biomes.

    a mech firing three laser weapons at once

    Fire Support/Sniper

    Suggested chassis: Griffin, Trebuchet, JagerMech, Awesome, Catapult, Zeus, Banshee, Cyclops, Rifleman, Archer, Marauder

    As the name suggests, these ‘Mechs will be outfitted with your longest-range weapons and often relying on your scouts or skirmishers to provide vision on their targets. Larger, assault-class ‘Mechs like the Awesome and Zeus can easily be used as direct-fire snipers due to their respectable armor capabilities, build the lighter platforms around as many LRM racks as you can mount.

    For your snipers, use autocannons, large lasers, and/or PPCs if the environment isn’t too hostile. Ideally, these ‘Mechs won’t be coming under a lot of direct enemy fire, so as long as you can keep them where they belong, you should be able to cut back on armour in favor of weapons and heat sinking.

    a big mech stands over the wreck of a destroyed mech

    Heavy Assault/Enormous Death Machine

    Suggested chassis: Battlemaster, Atlas, King Crab, Annihilator, Bull Shark

    Yang uses the term ‘juggernaut’ and it’s an apt one for this role – these are your biggest and baddest BattleMechs and they’re generally capable of mounting a ridiculous amount of weaponry as well as tons of armor. Once you have one, it’ll be the centrepiece of your lance, so build the rest of your team around what you plan on doing with this ‘Mech. Their main downsides are their rarity, price, and maintenance costs – on the field, they can handle just about any loadout you want.

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    Save your rare, powerful salvaged weapons to outfit these beasts. Multiple PPCs, autocannons, and laser banks all work well. However, if you’re short on parts, save your long-range weapons for other ‘Mechs – these giants are best for ploughing directly toward the enemy, and short to medium-range weapons are all you’ll need as long as you have some lighter ‘Mechs on hand to handle enemy snipers, turrets, and artillery, which will focus their fires on these juggernauts.

    That should be enough to get you started on ‘Mech building. BattleTech is as much about improvisation as tactics, so building your lance needs to be fluid and flexible. Just remember the old Mechwarrior saying: “Aim for the cockpit, kid – kill the meat, save the metal.”

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