Am I the only one that got dizzy from the staircase? (@m @ ) I stocked up lots of time on the floors and spent around three minutes at a time going down the stairs （´∇｀''）
I thought the red enemies were invincible (they are not)—turns out their heavy knockback simply puts you out of melee range :o. Maybe an actual enemy/room that punishes you like that could be considered, because right now there are no drawbacks for choosing "Fight" on every floor—even the ones labeled "hell" end up giving lots of time (those rooms are basically a 3min recharge from killing enemies) ;P.
Lastly, the minimalist 3D graphics, the whole surreal office space, and especially the monster designs reminded me of Killer7, nice work ;D
(PS: Best completion time was 11:12,66)