Hi,
I'm new to KR game. I've been playing the flash version for months and now started playing Steam version several days ago.
At first few attemps, I thought Pandaemonium campaign way hard for me. After reading wiki pages and watching many vids,
I was able to beat it (with Thor).
From today, I'm trying to beat it with Hacksaw. His "Tiiimber" skill is really helpful in this campaign.
As you already know, there comes out 3 Demon Legions in wave 5. One from the west, followed by another, and one more from the east.
The first one can be killed with Rain of Fire (easy), and the second one can be dealt with Hacksaw's drill. Hacksaw uses his insta-kill drill right away after he levels up to 4. needs some micromanaging to move him around, though. and to kill the last legion, call early wave, and you got "Rain of Fire"! Easy. Right?