We had to homebrew a new archetype to make up for the horrible features of Ragechymist. It really is extremely poorly balanced.
Bombs -> Morphic Mutagen
Morphic Mutagen (Su)
The Morphic Researcher gains the Rage class feature, with his
alchemist level counting as and stacking with Barbarian levels for the
purpose of rage, rage rounds per day, and rage powers. This class
feature functions in all ways identical to the rage class feature,
except that the alchemist can access his rage rounds only while
suffering from ability damage, drain, or penalties, and while under
the effects of his mutagen. Any prestige class which adds levels to
the Bombs class feature counts for the Rage class feature as well.
At 3rd, 5th, 7th, and 9th level, the Morphic Researcher gains
a Rage Power to go along with his rage. At 11th level he gains
greater rage. He gains a further rage power at 13th, 15th, 17th, and
This class feature replaces Bombs.
Poison Use -> Rage Mutagen
Swift Alchemy -> Morphic Humors
Morphic Humors (Ex)
A Morphic Researcher's internal humors are in a state of infused
balance. Starting at third level, damage to one ability creates a
surge in the others, which in turn expands them. Whenever a Morphic
Researcher suffers ability penalties, the corresponding statistic (as
explained in Mutagens) gains an Alchemical Bonus, stacking with the
alchemical bonus of a mutagen where appropriate.
At 17th level, ability damage and ability drain cause the same
This ability replaces swift alchemy and instant alchemy.
Swift Poisoning -> Sturdy Rage
Poison Immunity -> Lumbering Rage
Brutal Mutagen: Whenever the alchemist imbibes a mutagen, he gains two
slam attacks. These are primary attacks and are made using the
alchemist's full base attack bonus. The slam attacks deal 1d8 points
of bashing damage (1d6 if small), and takes no penalties on dealing
subdual damage. While the mutagen is in effect, the alchemist gains a
+2 competence bonus on intimidate checks. The Brutal Mutagen counts
as a Feral Mutagen for the purposes of what affects it, what it
effects, and meeting prerequisites.
Resistant Mutagen: Whenever the alchemist imbibes a mutagen, he may
pick 5 points of damage reduction to fire, cold, acid, or electricity.
The alchemist may choose this discovery multiple times, each time
increasing all other instances of resistance by 5, and picking a new
resistance at 5.
Adamant Mutagen: An alchemist imbibing this mutagen gains damage
reduction 2/adamantine, as if wearing adamantine armor. This
discovery may be chosen multiple times, each time allowing the
alchemist another +2 to his damage reduction, up to half his level.
The alchemist must be level 6 to choose this discovery.
Regenerative Mutagen: Once during the use of his mutagen, the
alchemist gains fast-healing 1 for a number of rounds equal to his
class level, plus his intelligence modifier. This discovery may be
taken more than once, each time allowing the alchemist to use the
regenerative mutagen again during each mutagen use.