FWIW I can't sustain that DPS - once Bloodlust wore off it would have dropped, but I'm pretty sure I can sustain > 3000 dps just about forever (if I don't have to heal).

Just ran DTK as well and got the Better off Dred achievement - pulled 3 raptors plus dread lol. Killed the 3 of them, then I had to basically sit and ignore Dred for awhile because I had him down to 50k hp and still needed to kill 2 more raptors. Just sat and healed somewhat while I waited for him to summon 2 more. Forgot to do the novos achievement (always forget that - stop his adds at the stairs or whatever) - will do that next time. Also killed Trollgore in 25 seconds which is my record so far.