You also can boost it with 2 other guys.
one guy is the dummy and don't get any points, the other guy is the shooter and you are the reviver.
First make sure that the person who is going to revive is in the same team as the dummy.
Than start a TD on lastbastion, go to the middle of the map en shoot him with a weapon (I prefer the first shotgun) and revive him. If you do it well you'll be able to gain between 70-80 revives a match.
Make sure that no one gets more than 1500 Xp, because that's the max that ubisoft created.