Alchemy: +Class level to Craft (Alchemy) checks, identify potions as per Dectect Magic with Craft Alchemy, 1 minute to prepare an extract (can leave slots empty and prepare as needed)
Sneak Attack: As per rogue 2d6
Mutagen: One per day, standard action, 10 minutes per alchemist level, +4 to physical stat, +2 to natural armor, -2 to corresponding mental stat
Poison Resistance: +2
Poison use
Swift Alchemy
Discovery:
-Infusion
Cruel Anatomist: Knowledge (Nature) used in place of heal