Ranger 2 Alchemist 2+ (Rogue 1+ if vivisectionist is banned like PFS)
you can gain an extra head and two extra arms if you gain some alchemist levels. and then gaining feral mutagen (which gives you +2 claw +1 bite attack assuming you have the correct amount of Limbs)
archetypes that work with this are vivisectionist + beastmorph.
this would give you 1x 1d4 bite attack 1x D8 bite attack 2x d4 claw attacks 2 x d6 claw attacks 1x D4 tail attack
go either STR based and be awesome or Dex based (which requires weapon finesse + an amulet of mighty fists "agile") and you are super awesome high AC and do heaps of damage
all primary except the tail
Beastmorph gives you heaps of cool things including pounce.
big TIP. boost your will save somehow as you will be very susceptible o dominate and killing the rest of the party