For a 1v1, you can brute rush and it usually seems to work, just build a warehouse, temple, warehouse then start making brutes as fast as you can and teleport them to the leader. You should have around 2 brutes on your leader when you attack their base at around 2 mins into the game.
For a 2v2, warthog rush with anders and then while rushing, start working your way towards getting hawks. By the time your warthogs are destroyed, you should have around 5 or so hawks depending on what resources are on the map. Like reactors and such. then once you have a decent amount of hawks, go and finish up on any remaining bases.