Doom II: Entering Dis

This is my first Doom WAD, made in around ≈17 hours and is mostly just me learning how to use the engine.  

Made with the Ultimate Doom Map Builder on the Doom2 map format and only playtested using GZDoom version 4.10.0 - Intended to be played with jumping and crouching disabled, freelook optional.

This WAD features a single, linear map which can be completed in a few minutes (Assuming you're not speedrunning). I'm calling the map finished, but I'm open for suggestions in regards to balancing.