Bud, the Infinite Struggle is epic. It's way hard for low levels, but EXP in there is crazy easy. And the towers are crazy costly. (And the AI is a little wierd, when you build a tower, those suckers HATE your builder and whatever he's making) As for Doors of Death, it's had some bugs and has been temp kicked until DC can fix. Like one was the camera gets stuck somewhere when you die and you can't see yer guy.
PS: I'll be workin on findin bugs for latest ver DC, as in 21, unless you say nay. (As much as I can anyway)