tutorial removed, so you don't have to play through it each time you start a new challenge run, without having to resort to creating a save state after the tutorial which can theoretically screw with the rng. (Well that and because save states are super gross regardless and should never be used) The hack could maybe even have some challenge runs built in, that you select up front when choosing a starter deck, and which are enforced throughout the playthrough. (or at least until the grand masters are defeated.)

If player attempts to use magic and doesn't have enough, a subweapon is automatically fired instead.

Remove touchscreen bullshit so that game is actually playable

ZX style weapon wheel, and the ability to map pause button to something else.

Add new game plus so you can replay game while keeping your cosmetics. Performance parts still have to be unlocked/purchased. You lose all your money. It ought to be similar in difficulty to starting over from scratch, just that you keep your cosmetics.

Fitting room added. (Failing that, weapons and equipment are free at all shops, so at the very least player is able to figure out the fitting themselves)