If it's got caco in the name, I have to play it. Will edit this post with post-play thoughts and perhaps a bit of constructive criticism :)
1st EDIT, Maps played: 01-05
Loving the maps so far with one exception (Can't win them all right?). The atmosphere is great, the titlescreen made me chortle (I wouldn't date an imp girl either!) and the music "bops hard" as the kids say (Do they still say that?).
The intro map was in particular a hilarious concept and a great execution imo. I didn't understand the first time that I had to run from the Fiend so I died lulz, but I figured it out eventually and was pleasantly surprised to find that you get 100% kills despite not killing him and the complete trashbag Imp that's out on the wing :)
I didn't want map 2 to end simply because the music is so goshdarn awesome in that level in particular. Generally upbeat, adventurous and energetic though throughout the maps I've played so far.
So yeah map 3 killed the mood for me a bit because of the severe lack of ammo. I imagine the design in this map was to limit the player to Rocket Launcher and fists since it seems there's mostly only rocket pickups later in the level. It felt like a somewhat odd difficulty curve for me at least. Played on HMP btw in GZDoom. And also that one particular room with 2 pain elementals, a revenant and an archvile can go suck a duck >:(
But that's ok, because maps 4 and 5 are peak entertainment. Some big open maps like this punish the player for going a particular way but your maps here are balanced perfectly. There's a gun in each corner and armor and health aplenty if you're willing to run around for it. Great stuff! Am thoroughly enjoying myself with these adventurous maps!
Although, there's not enough Cacos >:( But there's never enough cacos... ;_;