Cool, that was a fun and detailed map to play through. You have a very distinct style so it's very cool to see how you created the level.
Stuff:
-There are misaligned textures all over the map. Nothing major but it's here and there.
-The door to the Hitler room have no sides.
-The switch at the start that does nothing. I guess it's a troll?
-The BRNSMALC around the crates at the exit to the park have no backsides.
-The NUKAGE at the obstacle course does no damage. Same in the hidden room after with the megasphere.
-At the green armor in the pit at the green falls, it's easy to get stuck. You can not just walk out of it without have to wiggle for a bit.
-At the yellow key, you can trigger the floor lowering multiple times making them lower below the floor.
-The room with the megasphere after the obstacle course has no secret trigger.
-The plasma room has no secret trigger.
I was sad to see you didn't use the custom assets. The new trees would been nice in the park. The ending could also used a sign saying "snack bar" or something. I was about to ping
@ArticleWriter about the difficulty, but he posted while I was typing.
Overall, very nice and fun map.
Now for the bad part.
IT'S USING THE WRONG MAPFORMAT!!
It's gonna take me a while to convert it and I already have lots of stuff to do as is. But I don't want to yell since you put lots of effort into this so.....