Controls:

• 'A'/'D' or Left/Right arrows to scroll;
• Left mouse button to shoot the ultragun; keep button pressed to fire continuously;
• 'Z' toggles the ultragun autofire;
• 'C' to center the view on the mothership;
• 'Space' to access the Upgrades section;
• 'H' to toggle the health bars, 'J' to show/hide the HUD;
• 'P' to pause, 'Q' to toggle quality, 'M' to mute.

Hints:

• the game autosaves at checkpoints/chapter start;
• don't forget to buy&upgrade turrets, bays and the main cannon;
• spend a little resource units on the drones, they repair the ship;
• cripple the capital ships attack power by firing in the vicinity of the turrets;
• completely destroying the capital ships will earn the RU reward.
• the difficulty modes offer different game-play experiences: while nothing will go wrong on 'easy', things change dramatically on 'hard'!