I wouldn't have the fighter move in after the piosioning. I'd have him positioned nearby first and then moving away before setting fire to everything. That'll let you poison + burn + get a hit in. Could also try a mate and archer combo instead or multiple mages. That way you don't have to worry about coordinating.
Found the poisoned food by Butter but pretty sure I've seen more poisoned items and stuff around.
Edit: again, the above assumes a zombie fighter. It's just too hard to coordinate what your trying with a z movie mags and non zombie tank
Last edited by aj0413; 02/10/16 12:13 AM.