To win very easily on a 1 vs. 1 supremacy match against a Titan opponent, use Loki. You
will need to do a rush attack on the CPU in the Archaic Age. To do this, just keep sending
about five Ulfsarks near the CPU's Town Center. Then, circulate your units around his Town
Center by using waypoints, patrol, and the "Stand Ground" stance close to his usual temple-
building location, like the gold mine. Each and every time you catch a unit building any 
Temple, immediately try to kill that builder. Stay away from the Town Center's range as 
soon as you attack him. He will have to destroy the foundation, attack back, or run away.
This causes him to waste his resources, thus advancing at a later time. Build a few houses
or your own temple around his Town Center for a nice line of sight view of the "temple 
builder", then try to concentrate on gathering resources and researching improvements. 
Remember to cast "Spy" on a villager as well, and surround his Town Center with your 
Ulfsarks while staying at a far enough distance from arrow attacks. This will allow you 
to gain control of the enemy's land. If the temple builder attacks you, simply attack back
from a safe distance, lure him into the darkness, or use some of your other reinforcements
to team up against him. Watch out for newly created temple builders, and hunt down more 
temple foundations around his town center. You may want to also build some walls around 
his land to "confuse" the AI (block him off from going any further or near to resources).
Note: If you allow a Titan player to build the Temple with success, you are almost always
doomed. An exception is when you have military buildings, units, walls, and watch towers
surrounding him already in the Classical Age, so it does not matter if he advances. Save
regularly if you cannot multitask efficiently. Watch the CPU's temple builder and advance
to the next age quickly. This concept applies for the Egyptians and Greeks as well. 
The only thing that you will now need is five villagers, your obelisk-casting priests, 
mercenaries, and scouts for some additional line of sight of the builder instead. 
Note: You are not supposed to be able defeat a Titan player on a Supremacy-type random 
map game; only in Campaign or Deathmatch modes.