If you play your cards right and get lucky this should be a pretty easy fight...
Things to note:
Mechwarper, and iron Sensei are very important for early game. Same as Annoy-o-Tron.
Corrupted Healbot is essential, since it provides a big earlier-ish game and if killed won't heal him due to the 30 shield you're trying to grind at anyway.
Foe Reaper 4000 is the easiest way to clear his board when he's wielding the weapon, and it's a late game must.
So uhmmm... good luck and tell me how it goes.