Reminder this is a suggestion made by me so It might not be perfect that’s why you can comment on what you’d change.
Alchemist
-Passive Coagulate, Immune to poisons/Bleeding.
Day Ability
-Stone Skin, makes you immune that night (3 uses)
Night Ability(s)
Crimson potion, now 3 uses.
Emerald potion, now 2 uses.
Truth potion, Not usable until N3, will only find faction even if bd, 2 uses.
Tar Potion, 2 uses, gain occupy immunity while using tar.
I feel like this changes alch enough to make it on the same level as old alch, 3 emerald potions is one too many reducing healing and occupy makes you use it wisely, truth potion getting a Nerf is needed, bringing back stone skin so Alch is a use to the bd instead of worrying about themselves.