Honestly, the gameplay pretty much comes down to trying to hit your opponent first with any high range ability (or just oneshot them with the ult) and then spam attack them as soon as you get advantage in terms of HP, which makes the fights predefined and boring. I think adding defensive abilities like blocking or parrying which not only the player but the enemies could use would add some gameplay depth. The ult attack could be balanced out by making it only available after dealing a certain amount of damage to the enemies so that it can't be used as soon as the round begins. Also, the enemies in team fights target the player but completely ignore his allies which seems a bit unfair.