Originally Posted by L4D II JoK3r
anyway to pre-determine where the checkpoints are? or will i learn after my easy play through?
Stage 1 - When you take control of War Machine
Stage 2 - After you exit the ships bridge, defeat the Armigar and then walk past him through the door. This is the last checkpoint.
Stage 3 - When fighting against Crimson Dynamo
Stage 4 - When fighting against the Proteon
Stage 5 - When protecting the plane for the second time
Stage 6 - When the Armigar is around 30% health
Stage 7 - When you have to disable GreenGrid
Stage 8 - The fifth section, when War Machine has to take the head shot.