Originally Posted by VVh1pCr3am
Just got the achievement. You don't need to do the DLC for the Ultra Nightmare difficulty achievement. Just the vanilla missions.
What would you advise for going through on UN? Found out the infinite money exploit with the flower has been... ugh.. patched. GRR. Used it on regular Nightmare to stock up on everything, now I can't. Thanks a lot id, you just lost serious respect points.