also, for anyone who fiddles with cheat engine, ive found that lives are tied to multiple 4byte values, and locking them will crash at the end of the lvl, will try to simply change them and keep you updated
Update: There are only 2-4 byte value for lives (The first time i found many) it seems messing with these values and locking them are safe so far, will keep updated.
Update: 4-4byte values for wumpa fruit, locking them at 99 makes you get a life each time you collect fruit. 2-4byte values for aku aku mask, 0=no mask 1= 1 mask 2=2mask 3=3 mask, changing this value to any state when you have na mask grants invulnerability, however running into enemies/boxes doesnt damage them.