It says that I have killed 22 people but I thought I had less. Does it count as a kill if you do 95 percent of damage on someone even if sum1 else delivers the killing blow?
You also get credit for kills while in a group as well. That should make up for the rest of them. If your doing the player bounty quests, you'll see on those that you only need to be in the group to get credit for completing them. If you haven't done any of those yet, put a skill point in the last Fighters Guild Passive>Bounty Hunter. Then you can get daily quests to kill all the classes in the game as well as a general one for all players.
Yea it counts all kills that you contributed to, so if you and like 5 other guys team up on 1 enemy player, all of you will get credit. I also believe that you get credit for any kills that your groupmates get.
Where does it say that you killed 22 players?
For the alliance war archievements, it only counts if you have the killing blow. For the quest it's enough if a group member does damage to the player and you stand somewhere near.