The Last of Us differs from other multiplayer games in many ways. It’s stealthy, ammo and resources are scarce, and teamwork is absolutely vital. What’s more, your total kills take a backseat to Parts — a currency that you can spend on weapon upgrades, ammo, power weapons, and armor. All of which are capable of evening the odds in a match. You score Parts by downing and executing enemy players, but also reviving teammates, healing friends, and crafting and distributing items.