The weapon and player models are VERY nice. The definitive deathmatch modification for Half-Life. Don't expect much of it for team-based play. If you want to play as part of a team, try Counter-Strike of Tribes. Play this one for Deathmatch.
Deathmatch mode is excellent, especially with the stunts, which take some getting used to.
Weapons are a bit uninspired and there are not many to choose from. However, every weapon is effective in some fashion, it is all a matter of knowing the strengths and weaknesses of each weapon. The Bot AI is pretty good, and will allow for some practice before going on-line. Unfortunately, the team-mode is lacking for Bot support, as they tend to stand around with nothing to do. The graphics are top-notch.