By far the hardest Master Levels IL I've UV-Maxed. This ten-minute run is definitely no joke. May make a full guide on this level in the future, but for now, here's some tips on the hardest parts of the levell:

2:17 The Circular Room's initial fight. Dealing with the Pain Elementals is a total pain. First, kill the Manc to free up some space in the middle, then SSG the Arachnotron while hiding behind the central alcove. Then, when the Cacos and Pain Elementals are near enough, spam rockets to kill them as fast as possible. Then, use your chaingun to kill any leftover Lost Souls, as they can ruin your run later if you don't.

3:00 The Pillars Room. First, drop the nearest right-hand pillar, kill the shotgunners, grab the medkit if needed, and repeat for the nearest left-hand pillar. Then, quickly drop all second-row pillars, then rocket down the empty space between rows 1 and 2. Once everything is dead, kill the Hell Knights, then the Arch-Vile. The second half of this room's fight isn't that bad.

5:30 The Courtyard. Go around the outer perimeter of the area. Your main targets are Pain Elementals, Revenants (especially the one on the high ledge by the Soulsphere), Arachnotrons, and Mancubi (especially the ones on the high ledges). Target Cacodemons and Chaingunners if they're giving you trouble. Once you've killed all of those targets (and probably ran out of rockets), continue with the plasma gun. The rest isn't too bad. Also, the jump from the lift to the window with the mega-armor barely saves any time.

8:42 The Final Room. Go around to the left and kill the Pain Elemental, Chaingunners, and Revenants. Then, rocket the Barons on the crusher ledge. Wake up the Cyberdemon, try to position yourself outside of his view, and attempt to telefrag him on the crusher ledge. Then, rocket everything else.

To anyone else attempting this, I wish you good luck.