There seems to be a bug in movement. Sometimes I get stuck on the border of the battlefield and I can only go up and down. Also, is it supposed to change the orientation of the weapons when I get hit once in a while? It makes the game much harder.
Death Plateau detail- The bottom part of the map is just 2 blademasters + 1 drunk dwarf for the 2 warrior towers. The center part of the map is shooting towers (2 archers + 1 mage). The top right tower is 3 blade masters (to greet the super boss). You can start with 2 towers (2 archers + 1 mage) to kill the earlier waves. Then you can add more towers (2 archers + 1 mage) to prepare for flying onslaught. Somewhere in there you need to add the warrior towers (start with the one near the exit). Maneuver the towers to get the most fire for the oncoming targets. Check the coming targets to see which needs the most attention. I was able to win on normal mode with this strategy.
I finished the Death Plateau with mostly 2 elves and 1 mage in the towers. The exit point and entry points has 2 blade masters and 1 drunk dwarf in the tower. The mage slows the bad guys for the archers to finish. The mage doesn't have to be very high as it is mostly for slowing down the enemies. Don't bother with mortars as you need everything to kill the flying stuff. I also manuever the troops to maximize cover fire.
 "Gunball Reloaded"){kind=icon}
 "RPG Shooter: Starwish"){kind=icon}
 "Incursion"){kind=icon}