I could enable a cheat slot on your outfit menu so you won't take damages from bots' attacks but you still risk poison gas and falling to death from heights. Also even if you can make multiple saves, you will still need to find your way back to savehouses and that along the way you will probably die trying to leap from one ledge to another if you are not careful.

So we've got people working on maps, people working on invincibility...next is going to be infinite ammo.

Infinite Health & a ton of ammo & save disks have been around for ages ^.^ changing Haydee's text file by adding a 2 eg Haydee2 will make you invincible (to the bots), changinging the text for the ammo, save disks or damage percentage for the weapons is also possible (1 hit kills). Though I'd leave that to Simple Senpai ^.^ his scripts & customization options are second to none. I downloaded a Haydee2 (invincible Mod with text changed already) before but cant remember where I got it from ......

i dont mind running back and forth to save progress over and over, thats not the tedious part for me. i just end up dying way to often and usually to bots that i have immensely poor reaction time to (usually the swordarmed ones).

You can do this on your own, it's the easiest way, go to your Haydee root directory, under Outfits\Haydee. look for the file Haydee.doll and rename it to anything eg xHaydee.doll, that's it, you are now invisible to bots though they will track you but they literally can't hit you at all.

Because you will have no physical representation in the world. So no damage. Also no splashes on water. And no "Master" ending :)