R-Type DX Cheats

To unlock the De Souza Drawing Editor: You must first beat R-Type, R-Type 2, and R-Type DX. Then, at the main menu, press right on the D-Pad and the De Souza Editor option should appear.

If you've already finished a stage, you can skip it by pausing the game and then pressing the B Button.

Beat the DX game mode on 10 credits or less, then in a non-DX game press Select+A to become indestructible.