Gather your gold and ambrosia quickly by going to the coin icon, which is the Collect All button, and gathering everything. Head over to the map screen and send your hero to one of your dominated islands to safeguard it if you require even more of one or the other currency. Safeguarded islands will produce more resources than vulnerable islands will.

Ultimately you unlock a multiplayer mode, so you will have to build your path in a wise way. Place obstacles right beside the towers that you build, so that the towers have a longer result due to the blockading offered by the obstacles. Blend the tower ranges, and tangle up the path as much as you can so that other players have as long of a path as possible to obtain to your gate.