But how do you customize your 'Mech to fill one of these roles? As players progress through their matches, the BattleMechs that they use in battle will gain XP according to their battle performance. This XP can be spent to unlock upgrades in the BattleMech's tech tree. Each BattleMech will have its own distinct tech tree, and therefore its own distinct upgrade options. At certain points within the Tech Tree, players will receive Pilot Points, which are assigned directly to the player's pilot avatar and are used to purchase pilot abilities in the Pilot Skill Tree. Finally, players can purchase BattleMech modules with their C-Bills, which allows for the final layer of specialization on the customization cake.
For the full details on the game's customization and upgrade system, and to get a run down of some recommended loadouts for various roles, click on through to MWO's official site below.