This. Is. Downright. Brilliant.

My only complaint is that there are way too many holes, both with weapon pickups (which are probably just baits tbh) and the light going through them, which is kinda annoying because even the slightest string of light can give your position away to a swarm of enemies from every angle.

But apart from that, this is amazing and well done.
Although I'd maybe turn the enemy count down a bit, I'm not a scrub at the game but idunno

I remember deciding to make an inverted map once, but the concept was merely to have everything inverted, not to have any actuall gimmicks or anything.

THIS, though... already looks interesting by the screenshots.

Thanks! I hope it's all that, haha. I'm still playing with the concept of upside-down areas in future levels.

I'm yet to play this, but already this is looking to be a really cool level.