I think it would me MUCH better if you swaped up/down to forward/backward and left/right to hydraulics.
Somehow I managed to get the chain off one wheel, so game over for me.
Otherwise interesting gameplay, though the game is still very unpolished.
Overall good game. The moving of units becomes rather boring and tiresome and the levels are all the same. You could add more tiles in the bunker that can be occupied by special units. Also, units should be able to shoot in all directions with range penalties if they are not in front.
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