1st floor, explain how I should kill him?
Invest some $. If it doesn't help, spend $$ and the last resort is to spend $$$$$ (which is IGG desire anyway)
On a more serious note, just skip it. I usually end in floor 3-4 because every even mild p2p has revit5 talents and sets so even though I play the game over 4 years I am at a big disadvantage as f2p. Just accept it, the rewards for lab are not worth the time one spends there anyway.
At 1st floor, this should be easy with your heroes. I have a 20k team that would win.
Aries, Anub, cup
Sasq, Rock, Mike
WW, Dove, Nick
These should win you the match. Swap rock for SE if u have him. I would use a dmg focused talent for anub in this case, and IW crest. Should burst all heroes except skelly within the first second. Only psy crest can make u loose.
Maybe I underestimate it, since Im only at 160k might. Hopefully it doesnt scale that hard with might.