There is no moleman on that map
What nodes does he have?
Is that the one with Critical Setup and Crit Me With Your Best Shot? If so, the reason he’s so difficult is because critical hits against man thing don’t actually do increased damage. You’ll get the yellow number, but it’s just the normal damage your attack would have done. It’s part of his kit that makes him extremely tanky.
Pretty sure the OP is talking about the same problem that someone else experienced fighting Dr Strange. See link below https://forums.playcontestofchampions.com/en/discussion/260074/variant-7-3-1-doctor-strange-bugged#latest