Hello,

I am having an issue on level 15 of [Doom II + Master Levels]. When climbing stairs that are either the end of the level or the path to the blue key, at the bottom left part of the map, the game instantly exits (probably a crash caught by DosBox).
Does anyone know how to solve the issue (I don't have an appropriate save to reload at a reasonable point in the past, and redoing the level with 0 equipment just to hope it doesn't crash seems complicated for a noob like myself)?