I like the introduction and visuals, the gameplay itself doesn't feel balanced sadly the introduction to the enemies and controls could be slower in my opinion that way the player has more time to get to know the game better before the huge wave of enemies comes.

I absolutely love the introduction cinematic, with closed AI and the voice acting, it really is legendary XD

Otherwise, the 'h' in the font you've chosen really looks like a 'k', and that was a little disorienting, I thougkt I kept seeing typos :)
As for the gameplay, it was quite hard (I barely stayed alive 2 minutes), but I didn't mind dying so much as having to figure out which keybind I had to press. Maybe you could combine the reapairing and the turret into one button, or automatically start reloading when out of ammo :)

But overall very cool :D

Also, I personally appreciate the Linux build :)

Love the game. Its very hard! It took a while to finish.

great game, but hard for my noobie hands XD