[jammaloo]

Worth noting, that the myhouse.wad file, at least for me, does not contain the full level. You instead need to use the myhouse.pk3 file.

[INTPenis]

Oh yeah? I'm at the 4th level already, not sure how deep it goes.

[ImAnAmateur]

If you've reached MAP03 - The Gantlet at any point then you're not playing the right version.