• There are no ambient sounds anywhere. Some distant machine groans or humming sounds near vending machines etc. would make your maps feel much livelier.

• shanty2 has a misaligned shotgun that clips through the box its standing on.

• shanty4 is too gray and has way too many empty rooms, not even crates are there to fill up space this time. At the start of the map you created two paths, one goes to the right and one to the left. The path on the left leads to a small room that has only a single headcrab and nothing else, made me wonder why it was even created to begin with.

• The ending is pretty lacking, if you're going to finish up a mod / mappack but don't want to do something extraordinary you can always throw in a boss. Since we're on topside, a helicopter battle would suffice for example. Instead of a text saying "lazy ending" make the player arrive to a helipad, make them fight with some soldiers and finally a helicopter or a tank they call up. Once the boss is killed make it trigger a fade, give it an ending text or simply a "The End" and make it spit player out to the main menu. As is, we can see that there is nothing behind the door the player opens up after the fade disappears.

Epic