Although you committed a few mapping sins (no light fixtures, blocky brushwork, an enclosed killboxy room) this map has a certain quality to it. Like rough, modern architecture.

If you want any more praise, I'd suggest having more detailed brushwork and a less "box-based" layout approach. If you stick to mapping, read a few tutorials and take some of the criticism to heart, I expect some decent maps by yours in the future.

This is very simple and too close to a killbox yet.