Good work, Nezumi! I never saw the CS map, but this seems like itd be fun with FF. Well done with the vegetation.
I like the wall around the area, which I think is appropriate since its a 'fun' style map. Sure, the skybox could extend out some more. The sky and HDR compliment the map very well. I was running around and I saw a few things I wanted to point out since you might have missed 'em:
Are the window textures supposed to do that? :-/
Some funky lighting thing going on here, it would seem...
Random blue light strip?
This door would open outwards no matter which side I came at it from. Is it supposed to open? Is it supposed to open both from inside and from outside? Is it supposed to be so awkward?
Yeah, I'll bust your balls about every map detail, but thats because I want this to be a
quality fun map!
Oh, and one more thing: Change the farking name! Call it ff_skeet or something, but ff_l337sk337 just makes me want to stab jaws