Strategy Tips for the Battle Isle 2200 Demo DO NOT attack the yellow army. They are your only ally. The brown areas are hidden from you. Move Ranger units next to these areas; you will then see more of the map. Gather as many crystals as possible and move these crystals into your factories. They will help you make new units. Snake ground transport units and Guppy transport helicopters can land on these crystals and take them. Use your long range weapon units to slow down the enemy advance. These units are the Archimedes, Pulsar, Imperator, and Excalibur ground units. Knock out the green army first. Once this side is defeated move your armies towards the right side of the map. Then sweep up through the red army. Protect your headquarters, airport, and naval station.