There's plenty of resources, so regular or death match works well. This two player map is meant to be played multiplayer. Computer opponents don't have the AI to know what to do!
First and foremost, you must relocate your stockpile - your arable land is far away from your keep. Your keep is placed high on a flooded plateau, so virtually no walls or towers can be built. What you can do is take advantage of cliffs and choke points to attack and defend. There are two entry points to the enemy keep. Going across the deltas is quicker and affords the opportunity to attack the enemy's economy, but this route can be well defended against you. The swamps are less defendable, but very slow-going. You can't build round towers, but a few are provided for you and are built right into the cliff faces, so they're very hard to destroy!
I spent a while making this map look good and polished. Enjoy!