Started chapter 1
Reached chapter 2
Reached chapter 3
Reached chapter 4
Reached chapter 5
Completed all chapters
Killed 50 Floatheads
Killed 50 Parasites
Didn't touch the ground for 10 seconds
Completed the game in less than 7m30s
Completed the game without dying
Completed the game in less than 6m30s, without dying