Ok now for my report.
Map1 : "Starting Area"
I thought this was a nice touch, tub, bed, ect. 4 exits and a mancubus that's your friend.
I thought this was nice as well. But I didn't find a way through. There was alot of imps though.
Map3: "Key Factory"
I know it's unfinished but I liked it.
Map4: "Lava map"
This was a well thought out map with some nice lava effects and a big Mancubus boss that took way too many hits to die. More ammo should be placed around the area especially if he shoots Revenant projectiles. But the shooting torches was abit strange...
Exploding walls, big Chaingun guys, and a Spider mastermind at the end. Good level. I beat it really quick though.
Music: The music doesn't match with the area's (not your fault but they sound kinda gayish). you have time of course to change the music. But your the author and that's your choice and decision.
Weapons: The only weapon change I noticed was the rocket launcher. The only weapon that makes you feel like a Mancubus. Which was a nice touch.
Introduction: You should put a title pic and intro music as well. And "Hello Captain" gave me a chuckle. Also "The authors of this wad tried to find a point to this but it was a lost cause" also made me chuckle. lol
Also add music to the main area of the game.