Great demo, I really loved the art style, character design, and sound design. Also the leveling up your weapon/character mechanic was pretty fun to see.
In terms of criticism I would say the main thing is that the mechanics felt a bit disjointed in terms of presentation and story. I guess this could be fixed by further explanation in the plot but I wasn't sure why I was a station officer in training and how that had to do with collecting monsters with a wand to use as weapons. It's a cool mechanic but maybe tying it more with the setting could help.
Also at times the combat felt a bit dry, especially because there is an incentive to clear out all the enemies, and some enemies don't really do anything (the shadow guys just stand in a place and emit dark splatter for example).
I would like to see this project again in the future though! :)