Dig for minerals, open doors, destroy the enemies in your way and fight the BOSS at the end of the mine!
Very nice game, great graphics and I loved exploring the game world!
I would suggest that making the controls bit easier (WASD for movement, A, S & D for mining when next to blocks.) It will make using the mouse for shooting easier while controlling the bot.
I think you should build on this concept. I would love to play more of it!
Cheers,