Very nice shooter! I always enjoy procedural generation, and in this game it’s quite good. I wish that the enemy count was a bit higher, because some levels didn’t have any or had only 1.
Also, I found a small trick that lets you easily get the crystal: enter the room, destroy the front turrets, leave it immediately, enter it again, and run like hell (get it?) to the crystal. :-P
By the way: if you go to “Edit game” and add “Ludum Dare 48” tag, and then “Metadata” -> “External Links” and add the link to your game on LD, your game will be featured with other entrants on Itch and there will be a banner on your game page like this.