Very good run finally! I made some route changes in Floor 3 to get the chaingun early, which saves around 3 seconds overall, since I don't need to get it in Floor 5. More efficient movement and enemy kill tactics lead to some nice time save, as well as fairly good luck on the Floor 12, 15, and 16 skips. Some hiccups here and there occurred, and I think I can maybe bring this down to under 9 minutes sometime in the future with hardcore effort and really good luck.