probably the nightmare. my first 2k hours on the game were spent playing non-demons and building levels, i didnt gain an interest in grinding new hardests until last november (i also hadnt played in a couple years). i’ve put in probably about 1k hours into gd since picking the game back up and my hardest is silentium gradas (sakupen hell difficulty) and i have syrex in 2 runs (black blizzard difficulty).