Hey congrats on getting that one done!  It's an absolute nightmare of a stage.

Nice team, very f2p friendly (as long as they've been playing long enough).

UDK really makes it trivial, miracle heal and life havest blessings are a big help as well.  Pair it with some champs in destroy gear (or your own rotos's) and you can eventually grind them all down.  If champs are still dying, lydia bypasses the block revive if it gets proc'd so you can get them back.

Lydia makes it easy. But im like alot of players with limited roster and less viable options. Once i finish faction wars every rotation will be in the bag. Im also sure alot of players are beating Doom Tower hard waves with the introduction of Armanz.