The developers were tough in the beginning, released an unfinished product and then took an awful amount of time from the start!
However, the game now (June 08), ripe with the 1.5 patch. Located around 100 patches, is really team-based with assignments etc. There is something for everyone to do, not just shoot! The game looks great, has good sense. Are ranked and non-ranked servers so you can see their "stats", etc.
There are many weapons and "gadgets" to play with, for example, a small flying camera man can explode :)
The game can also be run under Linux, the only thing required is that Windows CD with serial number available. Then the Linux client to download easily and smartly.
The game is fun, cheap, looks good, has many features and works on many flat format (= player you would not meet otherwise)