The bosses in the three areas are repetitive and have only slight improvements on their attack patterns. Easy-medium-hard difficulties for game according to which the patterns are selected. Meaning game should have more different bosses. I know it's quite troublesome to come up with good concepts for bosses, but it sucks when you fight the same boss over and again.
And a bit more personal request from my key finger as it gets bored while holding down the fire button throughout the levels so I suggest option of auto-fire.
That's it about suggestions. Just more story, more enemies, more mods, more weapons and more games like this! Looking forward to playing the sequel!
Amazing game there! 5/5
Few things i'd like to mention (some of these have been mentioned before):
There appears to be some problems with walls as spaceship goes through really thin horizontal wall and sometimes when you collide with vertical wall and press up/down causes you to die as game assumes you collide to a wall above or below yourself and jumps the ship down/up and when ship is out of screen it's game over.
Other than that moving with arrow keys/wasd is sometimes a bit clumsy at least when you have speed maxed out the ship is quite hard to handle. one suggestion to this would be a option to move with mouse instead of keyboard.
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