http://www.mercilessdevelopment.com/

HL2 Co-op mod. Includes co-op versions of a few single player HL2 mods, and will eventually have HL2 entire campaign under co-op as well.

Has some cool modes too.

Check it out :)

I was thinking could get some improving in teamplay :)

Im a beta tester, so i have the latest build whic his pretty damn cool. The next beta should be quite soon, and it will have the full set of HL2.

As to who you play as...come on...the mod name is pretty obvious ;)

"Follow freeman"

You play as rebels, civilians and combine. The high score detail thing tracks you EVERY map/campaign. In HL2 The top player becomes gordon freeman (in the closed beta. it aint public yet) and i think gets a bit of a buff. Everyone else follows him.

Theyre also going to have a world-rank server, where it tracks everyones points/ranks from playing (if its a ranked server) and puts them onto the leaderboard.

There are some SWEET modes.

you can race to the finish in karts on one mode.

Another mode you sitll do the normal co-op, but one player is a combine assasin sent to kill gordon...thus, you fight him and the normal npcs.

Then theres battlezone. Its like team deatmatch really, can be a co-op against AI map or a RebelVCombine, where there are mobs in each map to fight as well.  This would be ace for a few clan matches, especially overcrabbed.

Then you have the actual co-op. You select to play either the mods (currently about 6/7 mod campaigns to play) or HL2.

The latest public build doesnt have the HL2 in it, but beta 3 will be around hte corner sometime soon :)

I havnt played the hl2 bits yet, been fiddling with the mods. Quite fun, if a bit short. Some of the mods are detailed with story, others are just like "go go go" :P

Difficulty setting 9 is riduculously painfull. 10 shotgun rounds to take down a zombie = ouch.

There are around 76 ish maps in the public beta. I think the closed beta has now reached around 230 ish, unreleased of course ;) (the full hl2 campaign + others)

HL2:Ep 1/2 will be done as well, and theres a discussion as to whether portal should be made into a mod.