ULTRAKILL 1-1 secret level
This secret level is great for a good number of reasons.
1. activating it is just clever in and of itself
2. it helps you complete the level challenge
3. They just made a bunch of puzzles from The Witness which honestly kicks ass
also sorry for the sound quality, still getting this new laptop set up
(edit: since this is my fastest growing video for some reason I thought I'd self-promo for a moment and say I've been streaming semi-regularly on twitch lately at / doomstricken and I'll probably stream future content updates for ultrakill as they come out as well)