ACHIEVEMENT - HOW TO UNLOCK
Ready to rock (5 points) - Clear the first level.
Stabilized (15 points) - Get all medals in any level.
All powered up (15 points) - Have all 4 power-ups at the same time.
The Per Lundberg syndrome (30 points) - Get 100% of all medals.
Hard as Rock (25 points) - Complete the game on Hard difficulty.
Ambitiously ambidextrous (15 points) - Clear at least 3 levels with all 3 controller types.
Bubbler of the week (15 points) - Get 10 enemies within the same bubble.
Skull and crushed bones (15 points) - Crush 10 skulls without touching the ground.
Given to wail (20 points) - Clear all levels using a guitar.
Firewalker (15 points) - Defeat 100 enemies using the Fire Boots.
Incognito (25 points) - In single player, clear each standard level collecting less than 20 points.
Best friends forever (5 points) - Revive another player 10 times in co-op.