I have particular hate against the Master Chymist PrC, cause it really doesn't even fit as a PrC, and it took a large number of mutagen options and locked them into this crappy excuse of a PrC.
So, I've been working on developing an archetype to fix that problem.
Duel-Minded Alchemist
Diminished Spellcasting
A duel-minded alchemist cast one fewer spell of each level than normal. If this reduces the number to 0, he may cast spells of that level only if his Intelligence allows bonus spells of that level.
Duel-Minded Mutagen
A duel-minded alchemist's duel-minded mutagen form is an alter ego that has a different personality than her normal form, an outgrowth of the mental changes caused by the mutagenic potions she has consumed over the course of her career. The mutagenic form shares memories and basic goals with the chymist’s normal personality but goes about meeting those goals in a different manner. The mutagenic form is often ugly and monstrous and may even appear to be a different race or gender than her normal form; they may look as different as two unrelated people. Indeed, the mutagenic form often has his or her own name, and may attempt to maintain independent relationships and strongholds (though the alter ego’s limited time in existence often makes this difficult). The mutagenic form even has his or her own alignment (which is selected by the player, but must be different from the duel-minded alchemist’s normal alignment). The change in alignment only affects the duel-minded alchemist while in her duel-minded mutagenic form.
This alters mutagen.
Spontaneous Mutation
At 2nd level, as a result of repeated exposure to her mutagens, the duel-minded alchemist can now assume her duel-minded mutagen form once per day without imbibing her mutagen. In this form, she gains all the bonuses and penalties of her mutagen. Using a mutagen also forces the alchemist into this form. Taking a mutagen or using the spontaneous mutation ability again while in her duel-minded mutagenic form works normally (with the new mutagen’s modifiers replacing the current modifiers, and the longer duration taking precedent). The alchemist remains in her duel-minded mutagenic form until its duration expires, her magic is interrupted (as with an antimagic field), or she expends another use of her spontaneous mutation ability.
A duel-minded alchemist may be forced to take her duel-minded mutagenic form against her will by stress or damage. Anytime the character is in her normal form and has daily uses of the mutate ability available, she may be forced to switch after suffering a critical hit or failing a Fortitude save. In these situations the alchemist must make a DC 25 Will save; if she fails, on her next turn she uses a standard action to change to her duel-minded mutagenic form (which counts as a use of the spontaneous mutation ability).
At 5th level, the duel-minded alchemist can assume her duel-mined mutagen form two times per day; this increases to three times per day at 8th level and four times per day at 10th level.
This replaces Poison reistance, poison use, and poison immunity.
Savagery
At 5th level, a duel-mined-alchemist's taste for violence leads her to strike more powerful blows with weapons easily mastered by her bestial mind. This gives a +1 bonus to hit and damage with simple melee and natural weapons. Theses bonuses increase to +2 at level 10, +3 at level 15 and +4 at level 20
Dual.
Duel is something you initiate by slapping someone in the face with your gauntlet and demanding your honour be satisfied. Now, maybe the alchemist happens to have two personalities that both value honour very highly, but I suspect that isn't what you were after.
Bleh.. stupid English words.. And not being able to go back and edit my post!
Well on my original document, I've found and replaced everything.