Touhou fan game in Go

This is a little fan game of Touhou (a bullet hell series by Team Shanghai Alice). It's written in Go programming language using Pixel for rendering and Cirno for creating hitboxes.

It contains 2 non-spells and 2 spells. I used Nue as a boss because she's the only character whose sprite sheet I managed to find (at first I wanted Clownpiece though). The only graphics drawn by myself are bullet sprites, all the rest is found on the Internet. If you are the owner of some assets used and don't want to see them in my game, contact me and I'll remove them

The demo was created to show the potential of game development in Go and my own library for collision detection and resolution called Cirno (in the honor of the strongest ice fairy!).

Also I decided to suspend the development of the demo because I would like to focus on improving my engine before the game turned into a mess (just like Yandere Simulator lol). Also I'm interested in creating a multiplayer 2D game using my collision resolution library, Cirno. Yeah, I'm eager to try different things.

There are two versions of the project, for Linux and Windows 10. Of course I could compile the game for Mac OS but I haven't ever held an Apple device in my hands.

Controls:
Esc - exit the demo;
Shift - slow down and show the player's hitbox;
Z - shoot;
Bombs are not implemented, sorry ='(

I'll appreciate any feedback.