It's very important that you play this on it's latest patch v3.4 otherwise it's gonna be a nightmare. For some reason on the wiki they still have the old 1.3v which has lots of annoying bugs/details (exiting levels on a random wall, elevators not letting you jump and therefore falling into the abyss, the camera is hell of a nightmare...). QoL improvements in later versions make the game much more enjoyable IMO. Overall a pretty solid romhack with a lot of new content.