This was a good concept and I love the sci-fi look of it. It reminded me a bit of some of the older SNES rpgs I used to play (it really reminded me of Paladin's Quest for some reason) and I liked that blast of nostalgia. However, the game is incredibly difficult and I actually haven't been able to beat it yet. I really think you need to balance the difficulty of the game, or you need to make it so enemies are visible so we can avoid them.
With that being said, this was a great entry to try and I enjoyed how the creatures look. Setting and creature-wise, you really hit those marks head-on. The game just needs some tweaking with its combat. For your first digital game, you did amazingly well. I agree with KV in that RPGMaker might be easier to handle, and you might want to give it a try if you decide to make another rpg. What I WILL say about that one, though, is that if you do, try for MV/MZ first. The older RPG Makers are a bit more clunky and harder to tweak, and there's less resources/guides available if you need help.
Keep up the good work. Looking forward to seeing what else you create.