What a bizarre game that I almost completely forgot about. I remember back when there were only 9 campaign missions and all of the enemies were IP ripoffs like Minecraft and Pyramid Head. The Level 4 hospital boss scared me so fucking much as a kid lmao. Also I could never beat the Slenderman boss I had to get someone else to do it for me. The nostalgia for this is equivalent to the amount I remember. I've heard it's not as good these days but it's been a literal decade since I've played so I can't really comment on its current state.