Unlock Hidden Fighter "Cyber Sub-Zero"

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each

Spill 10000 pints of blood

Complete Arcade Ladder with Any Fighter

Complete Tutorial Mode

Create a chain of 4 players grappling each other

Find all the hidden intel.

Guide the squad through the Soviet outpost without them getting killed.

Use only dual wield weapons to escape Kowloon.

Use no more than 6 TOW guided missiles to destroy the tanks in the defense of Khe Sanh.

Destroy all enemies on vehicles during the prison break.

Kill 5 enemies with a single frag grenade in the campaign.

Taunt GLaDOS in front of a camera in each of the five co-op courses