@bernd No. Other guides have pointed this out and for perspective, I used the more lives cheat for the Redemption Ending run and still got it.

will this deactivate steam achievements?

Gun mode is up up down down left right left right O then X on Playstation controller & B A on Xbox box on the title screen. Your will be Maxime Gunn , You'll have a machine gun, 30 lives given to you at start & you go flips in the air when you jump. It works I tested it myself.

I could also check that future mode is, indeed, identical to the mode used for the levels played in future ending, so it's probably nothing tied to a name. So that leaves us with only the missing Wizard Codes

Very nice !
I could confirm through hack that angel mode seems indeed not functional. Demon mode works but is janky, you can't crouch, so perhaps that's why it ended being a wizard code instead of a character mode. I checked that sword mode is indeed active when evil (normal character), very nice find on SWORDCEDOR

Just named a character swordcedor, it does indeed start you with a huge sword. Nice find Radez.

SWORDCEDOR activates sword mode. At least the save data flag went to true when using that as the file name.

for an exmaple of the weird coding, power/mana/health levels dont actually scale by1 - 7 sand then max - they scaled to the amount of exp needed - meaning level 1 is 750 then 1500, etc, with max being 9999

well ic an tell you the morality scale makes little sense.
perfect morality at stage 1 with no flags is a number in the billions.

there's a trigger for " is evil "
and there's a trigger for " angel and demon " modes as well
then there's a flag called zelda2, one called excite, etc etc - I made a list a screen back here.
most, if not all of the thigns i pulled turned out to be game wizard codes.

noting there's NOT a trigger to " turn good " there's just your floating morality point value, and a hard coded " is evil path " trigger.

The only times we see an angel skin is in the evil to good ending, so there are sprites... that's about all we now. We could check if sword mode is only the evil path variable, in the file of a save with a normal Alcedor going evil (I can't, my evil path route was done with the wizard)