If you use a save editor to unlock the "Doom's Castle" Gauntlet nodes before beating the main story, the 4.0.1 patch cannot validate your progression. Several users on Reddit report that unlocking the God Emperor Doom skin via cheats triggers a "save corruption" error when entering the Shield Depot.
Also, mentioning that some codes can be entered via the in-game input code feature. For example, pressing a series of buttons on the controller. Maybe there are code sequences for things like unlocking characters or getting items. But I'm not sure if the actual game has such codes. I need to check if that's a thing in Marvel games or if it's a fan-made idea. Marvel Ultimate Alliance 3 Update 4.0.1 Cheats
: Unlocked via the Alliance Enhancement tree (center nodes). ⚠️ Risks and Considerations If you use a save editor to unlock