I've been flipping the field of dreams board for about a week now, in particular hammering an individual boss with 40 or so heavy artillery for days . . . and that cat is still showing half life. It gets to the point its meaningless to continue, but since I'm lacking a real life I find that I still sit here. Situation establisned, now I need to ask - any chance of yet one more upgrade level to the weapons ? I've already shopped up everything useful, but after wave 400 even the super-sized kit is lame. Help ?