Killed your first enemy
Collected 50 bottles
Found a calendar
Completed first level
Killed 30 enemies
Completed the car level
Killed the first boss
Performed 50 slides
Killed 72 enemies
Killed 150 enemies
Killed the second boss
Completed the level on skateboard
Killed the third boss
Don't talk, just crouch till you drop. 44 times, to be exact
Completeв the level on boat
Killed the fourth boss
Jumped 200 times
Died 15 times
Blowed up on three mines
Completed the game