I use MPD, a carry pet (20+) and Menagerie Custodian.
MPD kills the eye with dragon breath attack.
Open with bombing run on the tonk, then more breath attacks. Finally, when about to die, use Explode. Tonk should be almost dead, with a bombing run also hanging over it. Sometimes it has even used its failsafe by this point.
Swap in carry pet and kill tonk. Carry pet eats Fezwick's stun.
Swap in Menagerie Custodian, simply Shock & Awe then Ion Cannon to make short work of the monkey.
I'm sure there are better combos that allow you to use a weaker carry pet, but this setup always works for me.