This game needs a few major adjustments. Things that need to be changed:
1. Player movement. Ganthrithor pretty much nailed this one
2. The zombie AI needs to be programmed to move around the walls to get your character. I found a spot on the bottom of the map were the zombies couldn't even touch me and since the laser shoots through walls I could have just stayed there and racked up points.
3. You should really change number 2 in how to play.
"Sir there are monsters coming to steal our treasure, what are your orders?" "I want the men to drill for oil and use it to buy cannons." "But sir couldn't we just use the oil to get mo..." "NO BUTS! Now carry out your orders."