[Critical Mass] Ammo's running low. Your plasma rifle is firing on fumes. You've been punching and kicking your way through caves and a maze of shipping containers to converge on the reactor. Now you've got to protect the reactor room until your team can induce the cooldown sequence and keep the whole base from blowing sky-high. Luckily, out of the corner of your eye you spot a gleam of hope: a weapons cache ripe for the taking! Re-arm yourself and hold off the enemy!