5 tries and still didn't finish it.
Ammo is scarce as already mentioned. I think you shouldn't rely on people finding everything hidden behind breakables.
Half of the times I couldn't see what I'm shooting at. Dark corners was shooting me, so I shot back.
There was some clip brush (I guess) between some platform and a wall, that made it look like I'm walking on air. Can't describe the place, but it is in the demo.
Difficulty felt quite hard.
Don't have anything else atm. Going to wait for the next version, so I could still have a first run of the rest of the map.
Here is my demos. Hope it helps.
https://drive.google.com/open?id=0B3li06myS1r1ZDYtWnhKR3pwbTA