Unlock Prototype Boy

Unlock Manic

Unlock Brownie

Beat Manic

Beat 0xDEADBEEF

Beat The Lab Dark World without dying

Beat The Other Side Light World without dying

Beat The Lab Guardian

Beat Dr Fetus

Unlock Tofu Boy

Beat Omega Alpha

Beat the game completely

Unlock Meatsona

Beat The Other Side Dark World without dying

Unlock Classic Dr. Fetus

Unlock Classic Boy and Classic Girl

Beat Tetanus City Dark World without dying

Find 1 Warp Zone

Beat Big Slugger

Unlock Dr. Fetus

Beat Chipper Grove Light World without dying

Beat 0xDEADBEEF without dying

Unlock Mega Bandage

Beat The Clinic Dark World without dying

Punch 1000 things

Unlock the ultimate couple

Beat The Lab Light World without dying

Beat the game on New Game Plus

Unlock Squirrel

Beat Every Warp Zone

Beat The Clinic Light World without dying

Beat Chipper Grove Dark World without dying

Find 1 Pacifier

Beat Tetanus City LIght World without dying

Unlock Lil' Meat

Unlock MZero