The Visitor Event Guide/Discussion.

The bomb room, seriously...

I was doing the level 120+ PQ with a level 200, a few 18x's, and 16x's, and spent around an hour just doing that one stage. We were always too slow, then more would spawn. D:

The first Bomber Room was completed with a 17x Hero,18x NL & Paladin (2 were glitched out and SEer stayed behind). I'd say it's pretty much 80% Strategy 20% DPS.