This game is amazing and here is a list of cheat codes
Fake Zero: L R L ↓ ↑ ← ← ↓ → ↑ ↑ ↓ ← ↑
Black Zero: L R L ↓ ↑ ← ← ↓ → ↑ ↑ ↓ ← ↓
Ultimate Mode: ↓ → ← ↑ R L R ↓
New Game+: ← → ↑ ↓ → → ← ←
Start as Hooded Zero: ↑ ↓ ↑ ↓ ↑ ↑ ↑ ↑ ↓ ↓ ↓
Fake Zero: L R L ↓ ↑ ← ← ↓ → ↑ ↑ ↓ ← ↑
Black Zero: L R L ↓ ↑ ← ← ↓ → ↑ ↑ ↓ ← ↓
Ultimate Mode: ↓ → ← ↑ R L R ↓
New Game+: ← → ↑ ↓ → → ← ←
Start as Hooded Zero: ↑ ↓ ↑ ↓ ↑ ↑ ↑ ↑ ↓ ↓ ↓