Here is the full list of all 12 Super Cakeboy achievements.
Complete stage 1-1.
In one run, defeat twenty enemies with the Super Donut.
In one run, defeat twenty enemies with the Croissant Boomerang.
In one run, defeat twenty enemies with the Cupcake Bomb.
Defeat Dark Cake in any stage.
Complete any stage with all three ingredients.
Shoot for the Moon!
Starting from any stage, earn sixteen extra lives.
Starting from 1-1, complete 1-3 in under two minutes.
Complete the game starting from 1-1 in under 11 minutes.
Collect all three ingredients in every stage.
Thank you for playing my game!