I have mixed feelings about the noisy pixel art visual style, but it is very consistent and well done. The audio matches well with it.
The gameplay was decent. It was fun, but pretty basic, and had a few minor issues. Gunplay was super basic, though I liked the effects a lot. The double jump feels very loose; if it's supposed to be a double jump it should have an obvious second "kick". I wish enemies responded more when you hit them, and it was clearer when you take damage. I didn't like the number of blind jumps in the level, especially since dying restarts it. I also sometimes found it hard to differentiate between platforms I could stand on and bits of the parallax background.
I suck at platformers and was able to get through this one with no issues, which I view as a good thing.
The boss was underwhelming, but I think that was a deliberate narrative choice. I'm also not sure if Tiki is a real magical girl or a delusional psychopath. Some of the dialogue is funny, some of it is cringe, but the story ends before I could really get a feel for what it would be like overall.
The demo was short and limited but this is definitely one where I want to see the full game someday.