Link to old thread
Popping the new subforum's cherry, woo!
This mod is, at the moment, still in beta, but don't let that stop you. It's pretty good so far.
Basically, the mod is Spehss Mehreens vs Tyranids. Each side has a basic class and four buyable classes. They're broken down like so:
Tactical Marine - basic class
-bolter, bolt pistol, grenades, knife
Veteran Marine - unlocked at ~50pts
- chainsword+plasma pistol, bolter, grenades
Special Weapons Marine - unlocked at ~50pts
- meltagun, bolt pistol, grenades, knife
Heavy Weapons Marine - unlocked at ~100pts
- heavy bolter, bolt pistol, knife
Warrior - basic class
- deathspitter, scything talons
Lictor - unlocked at ~50pts
- scything talons, chameleonic carapace
Carnifex - unlocked at ~50pts
- bio plasma, scything talons
Zoanthrope - unlocked at ~100pts
- warp blast, repulse effect
The most recent update of the mod is a few months old, and there's only five or six maps so far, and only four community servers, but the community is healthy and quite active on weekends. This Saturday saw at least two of the servers completely full (due in no small part to some players advertising it on 4chan).
There have been several Steam groups created for it.
The modders regularly play it, and in a match yesterday were teasing about the playtesting of two new classes this weekend: the Terminator and the Genestealer.
Some purdy pictures:
The team is apparently small, so updates are a bit long in coming, but what they've built so far is pretty respectable. If you fancy playing a user-made 40K first-person shooter that's better than Fire Warrior, try this mod out.
FOR THE EMPEROR!
PS. mods, is this the right format for a mod thread? I tried to be as informative as possible, so if I made a mistake, go easy on the Pain Glove!
EDIT: Damn, this reads like an advertisement. I am not affiliated with this mod, by the way.