When I first got my hands on the game, they were doing scenarios. I grabbed the first available pc and it was a Shadow Warrior. Trust me, this was far from one of my first choices I wanted to play, but it was really fun none the less.
The SW had two stances on the bar, Scout Stance which increases your ballistic skill, and Assault Stance which increased your strength and weapon skill. You had your basic ranged abilities like a shot that does x damage, a shot that does x damage over time and so forth. A couple of the spells I used as frequently as I could was Takedown and Throat Shot. Takedown does damage and reduces targets run speed by 40%, very useful for keeping the distance. Throat Shot did damage and silenced the target for 5 seconds, helped out a lot for keeping those zealots from healing the tanks and melee dps. I also got to use the rank 1 & 2 morale for SW. Rank 1 morale was a big damage shot that was instant cast and knocked the target back several feet. Rank 2 increased your damage by 100% for about 10 seconds as best I can remember. I stayed in scout stance most of the time and I came in 2nd overall in total damage.
The next time we played, they changed the game to the starter areas so we could do some pve. My buddy wanted to try out the Black Orc so we did that first. The BO seems pretty cool. He has a combo builder type system where your abilites unlock another tier of abilities and lead to a finisher. For instance, your first abilitiy is Clobber which does basic damage. Then, that unlocks another ability and so forth until you can use a finisher. The BO does decent damage, so don't worry. Basic abilities were a direct damage ability, a throw weapon ability, and a damage over time ability.
Then, I got to try the class I was most interested in, Shaman. I really love this class. You have 2 meters, one for healing, one for damage. When you cast a damage spell, your healing meter goes up 1 point, to a max of 5 points. At 3 points, your healing meter starts to glow green. This means your heal cast time is greatly reduced. If you get 5 points, your heal is instant. This makes the Shaman incredibly versatile. I easily took on 3 equal mobs and came out in good shape. The basic abilities were Brain Bursta, a damage spell, Gork'll Fix it, which healed some instantly, and the rest over time, and Life Leaka which did damage over time.
Also tried a Disciple of Khaine and Warrior Priest for a bit. They played pretty similar (yeah I know

) . Both had a couple of basic melee abilites and a heal over time. Then they get an ability which damages the target, and increases a stat of your defensive target. Didn't get to play them very much, but seemed interesting also.
I'm sorry I couldn't remember exact numbers and everything of the spells, it's hard to concentrate with all those people around. In closing though, this was my first hands-on of WAR, and the bad thing about it is I'm not in Beta! The build was not the current one, but it is still very nice. It runs so smooth and looks great even without the lighting effects and such. I was wearing a shirt that read "Will Beg For Beta" on the front, and "WAAAGH" on the back. I talked with an EA Mythic guy named Gary quite a bit, and he was really nice and helpful. I didn't win one of the 30 slots for the beta drawing, I thought my shirt would cement me in! He said if it was up to him he would've got me in, but it's all good. At least I got to taste it, now my hunger is stronger for WAR!