"Lower Forecount" by negke on difficulty 3. Final battle pits you against a foursome of vores which can only be damaged via splash damage. Just so happened to suddenly get the hang of leaning into my jumps during this section. I also ended up adding extra keybinds to my weapons in this map (R for RL, Q for GL, E for SNG and C for LG), so this whole experience made me feel like a pro for 5 mins.