I found the movement really difficult to get used to. I didn't know that I could swap objects' positions, until I accidentally right clicked on them. Which leads to my next problem; don't have your tutorial on the dialogue. It's better to have them appear in the game, hovering over the character model or on the top center of the screen, and show what the controls are.
And the sound effects, whenever my ship got attacked, were pretty loud for me.
Aside from that, the music did give a nice touch for a game like this.