Have 10 lives
Reach 50000 score
Find Sunglasses
Find Trainers
Use Shield
Open door in Badger Mill
Find and use Joystick
Get disk in the slot at the top
Knock out all blocks
Light a big candle in The Light House (not in Junior)
Put the cog wheel on the other platform
Cut off one of the frog's legs
Create and use potion
Complete Lunar Jet Pug level
Find and get the life in The Cove
Find and get the life in Wabbits World
Find and get the life in Angeltier Falls
Find and get the life in Darkskull Castle
Find and get the life in Racrock Forge
Defeat Polly Pirate
Defeat The Emperor's Old Clothes
Defeat Flour Power
Defeat So Pharaoh So Good
Defeat Halitosis The Dragon
Defeat If Looks Could Kill
Find 5 lives in Angeltier Falls
Find secret in Star Fall Lake
Find the reference in Lee and Errr??
Find the Secret Tunnel
Get endless lives (This disables getting all achievements)
Find demoscene-esque credits from the developers
Find the blank screen with streams
Write secret password
Open the secret island
Complete the Junior
Complete the game
Complete all 51 levels
Complete the game through extra secret levels
Complete The Red Woods (main door) without putting out the fire
Defeat all wabbits in Wabbits World
Complete Angeltier Falls without cutting the bridge
Defeat all objects in Puggs In Space
Open the door with the last lever in Pyramids
Complete Darkblade Forest without putting out the fire
Destroy the passage without destroying the lamps in Diamond Mines
Complete Darkskull Castle without using potion
Defeat Polly Pirate without taking damage
Defeat The Emperor's Old Clothes without taking damage
Defeat Flour Power without taking damage
Defeat So Pharaoh So Good without taking damage
Defeat Halitosis The Dragon without taking damage
Defeat If Looks Could Kill without taking damage