Well, you target the people you want to melee by clicking primary attack (i recommend mouse button 1) Press it again to swoop (you get a sudden burst in speed when swooping, but remember you cant teleport while doing so) and when your swooping towards the "bad guy", hold down secondary attack (i recommend mouse button 2) and if you fly into them, then you will kick, punch, smash, whack, thump or zoink them all across the map. Mix with a bit of tactic and teleporting and viola. (Try to avoid head on collisions, since the winner is usually decided upon ping, i ususally teleport around people and catch them off guard)