Clear the first level

Get all medals in any level

Have all 4 power-ups at the same time

Get 100% of all medals

Complete the game on Hard difficulty

Clear at least 3 levels with all 3 controller types

Get 10 enemies within the same bubble

Crush 10 skulls without touching the ground

Clear all levels using a guitar

Defeat 100 enemies using the Fire Boots

In single player, clear each standard level collecting less than 20 points

Revive another player 10 times in co-op