You could explain why before giving your opinion.
But that could take hours, even days.
If I give you all the answers how can I be sure you'll learn anything?
At any rate, I'll sum it up.
The generic barricades are spammed and most are useless. You have crates lying around in the middle of the desert for no reason, the battlefield is perfectly boxed in (square canyon here we come!), the terrain leaves much to be desired, there are no inner-walls and it is one open enclosed box rather than a flowing DM. The weapon choices leave much to be desired as well as lack consistency. You used a JVS door and unless it opens on collision, JVS doors are big no-nos in DMs. The watchtowers are okay at best, but given the layout, they will likely be heavily trafficked. In the end the setup leads toward an easy terrorist win, some balance work is left to be done in that regard.
Overall the DM is small, does not flow well, and overcrowded in some areas with redundant and distasteful doodads, and under crowded in some areas where it matters most. Cover is hard to find and snipers will be abundant.
I would also prefer to see the sentinel have a cloak & dagger.
