"Nuts" is a Doom level consisting of two large rooms with 7,463 and 3,152 enemies respectively. You can get a UV speed time of about 36 seconds with good RNG.

Another run category is UV max which includes killing every enemy once. "Nuts" does not offer enough ammunition to complete this, only enough to get 92% of kills (leaving all Cyber Demons alone).

But, the Revenants sometimes fire homing rockets that you can accumulate over time and eventually crash into the demons. Since rockets are unlimited and each have smoke particles, your device slows to a crawl (1 frame / 3.5 seconds).

What an absolute waste of my time this has been...