First of all, I absolutely love the style of this game, the pixel art and retro-menus work super well in my opinion. Using the dungeon crawler movement to fly through space and control a space ship was really cool and unique. The atmosphere on the mining planet particularly was great as it left a spooky atmosphere just long enough that when things suddenly appear it pays off well.
Only a couple of small bugs/oversights, dying to the final boss caused the projectiles to still be there in the ship leading to a few extra deaths, and after defeating the final boss it's not very clear what to do after that, I only found out by looking at this page you're supposed to go back into the ship afterwards. The game doesnt really do the whole looping thing very well as you just kind of go back out of the pod and can instantly just go back into it again as you still have the 3 warp crystals and if you go back into the ship it acts like you've just killed the final boss again.
I also felt the movement could be just slightly faster sometimes, not by much really just a little bit for the slower/tenser atmosphere you were going for here without making it feel like you're being weighed down.
Overall very good! I had fun with it and would be interested to see it expanded upon!