Avoid the wall traps in mission 4.
Beat the other player at the end of a co-op game.
Complete a single player game without continues.
Complete a single player game without using any object.
Take out all the enemies before the final boss in a single player game.
Kill two enemies with a single stick of dynamite in a single player game.
Pass the bridge in mission 3 without falling in the water.
Complete mission 1 in a single player game without being hit.
Finish mission 3 holding a baseball bat.
Pick up a whip, a bat, a knife, a drum, a carton, a stick of dynamite, and a rock.
Get 20,000 points.
Reach mission 4 in a co-op game without continues.