Oh ha ha, I made a few codes of my own this evening. I actually discovered the identical infinite lives code. :)
- SZXAPGVG = infinite lives
- GXKIIPEY = energy boosted shot
- GOVEGLGA = start with 10 hearts
- GONAAUZA = start with 10 heart capacity
- AAOIPPAZ = infinite jump height
Also tried NNXAPKYX as invincibility... but unfortunately it leads to getting stuck if you fall in a death-pit. Tends to fall through the floor and be stuck in the ceiling of the next room. :(