Umbra

Umbra is a big, nonlinear map with a narrative underpinning it. That narrative involves, among other things, gay girls. Gameplay ranges from low-tier-enemy-heavy slaughter and microslaughter to: small-scale traps, light incidental combat, parkour/platforming, quiet exploration and secret-hunting (often there's some mix of a couple of those). UV can get quite hard. Play on HNTR or HMP unless you know you want that.