Run.

This game has charm. It'll draw you in, and next thing you know you're hitting the ABXY cheatcode on level 101 because persisting in that world of unholy ichor will poison you to the point that you are cursed by the haunting memory of "bonus soda." Which it's too late anyways. I'd've rather played Sonic '06 had I known hat I was getting into. I'd like to say this ironically, to not be speaking remotely from experience. But that's where I am. If you're looking for a psycological horror game, this'll start hitting you about 43 levels in. But don't say I didn't warn you.