Kill only a single enemy with a shot from the BFG

Pickup 25 carrots found underneath breakable blocks.

Smash 10 or more gems in a row.

Don't use the speed up against a boss.

Try not to collect bonuses in a level.

Destroy 100 rocks.

Clear a level in 20 seconds or less.

Collect 10 or more bonuses in a single level.

Milk a cow for the first time.

Unlock and play "KT and the Sunny Funny Band."

Cook up a Cool rating for Stage 4 on Normal difficulty.

Win a race in Adventure Mode.

A winding staircase descends into darkness. Finish the Grass Plains of Karamoon.