Not sure why people are having problems with the controls when there's a clear and fixed coordinate axis that shows which direction you're moving the block.
This game is great but it could really use a command to ferry supplies between buildings. Sometimes a depot will have dozens of extra supplies but won't supply the sniper 2 squares away. Additionally it needs a command to vacate all supplies and people because right now you have to abandon a building and then have people recover it.
Great game, I think slightly faster reload times are needed to balance the difficulty though. I LOVE the level of customization you can apply to your characters btw!