This is an awesome shmup! Very fast and frantic, plays great! However, it pushes pico-8 to its limits and it kind of shows. The resolution is just too small and it's sometimes hard to discern what's going on, the ship is huge compared to the size of the play area, and it stutters when there's too many bullets on the screen. I find that pico-8 games are at their best when they play well with its limitations instead of struggling against them - like Mai Chan's Sweet Buns, Porklike or High Stakes (my personal favorite, even though I hate gambling). So maybe for a project like this it would be better to use something less limiting? I don't know, I'm thinking about watching the tutorial, but following along in something like Love2D or Monogame.