I played this quite a bit last night and have some feedback. Stuff that is probably not going to change, but that you should consider for future designs.
First, the explosive barrels are clever, but they don't scream danger like the pumpkin bombs do. It actually took me several rounds before I realized those were bombs; I'd hear the explosion of one near me, even took damage a few times and realized I'd been hit by a pumpkin bomb, but didn't know the source.
The problem is that I'd scan the area, and the barrels didn't stand out from the environment -- my first thought when I'd see one is "oh, that's like the barrels from cp_well." They had XXX on them, which to me is shorthand for "scrumpy" not "danger." I would have recommended that the barrels be a more contrasting colour, or at the very least, the XXX be a bright pumpkin-orange colour. Maybe even go so far as to put dynamite sticking out of the top of them in a strong red. Even after I realized, I'd have to look specifically for where they were which is not a problem you get with the default pumpkin bombs.
Second, there are several routes that feel like they twist back on themselves and lead o places I wasn't expecting. For example, the route that goes up stairs, then across a small plank into a damaged wall, always threw me off because I was expecting to end up in a different area.
Overall, this map is so much fun. I enjoyed it immensely. Congrats!