Demon's Souls BLUS30443 Modded EBOOT [credit to crustybread1111/Inaudax]
First of all, credit to crustybread1111 & Inaudax for explaining what offsets to mod to make this.
I DO NOT ADVOCATE CHEATING ONLINE WITH THIS, DON'T BE A ****SUCKER AND RUIN THE GAME FOR OTHERS
Now, onto business. This eboot will make it so no enemies can harm you, with the exception of the red knight and apparently one boss. To my knowledge there are no side effects, as I'm playing through it, I'm making notes of what has changed.
Standard enemies won't hurt you
Fire won't hurt you
Dragons won't hurt you
Falling WILL hurt you
Traps WILL hurt you
Lava WILL hurt you [just found that out the hard way]
Corpse Ball WILL hurt you
Red Phantoms WILL hurt you
Black Phantoms WILL hurt you
Miranda WILL hurt you
Old Monk WILL hurt you
Old King Doran WILL hurt you [just had my ass stomped in surprise]
Fire and enemies won't damage the environment - ie wood, crates, etc
World Tendency is NOT locked. Extensive testing done.
No AI -
After killing the first Maneater, the second will spawn but not fly into range. Turn AI back on to continue.
Storm King won't come low enough for you to kill. Swap for a no-enemy-damage eboot.
This package is signed for 3.41 but easily signed for 3.55, just run package_finalize.exe on it.
Install it as standard, and move your usrdir files to hdd0/DMS_GAME/usrdir
Again, much thanks to crustybread1111 & Inaudax, give them credit where it's due!