You have a very interesting concept, however this follow through was a bit poor. The checkerboard pattern, along with the browser scrolling when using the arrows keys, really hurt my eyes, brain, and soul. I got stuck around lv 5, I dont think its possible to beat it.
The enemy chases the pig, but there is no way to run away or juke. I tried going down and going up. When going up, you have to constantly keep scrolling the webpage to even have a chance of winning, which gave me a migrain. The concept is really interesting, maybe try uploading this as an app, cause on browser it just doesnt work due to scrolling. Also please include a full screen button in you itch, as that might also fix scrolling issue.
I'll revisit this if above is fixed, purly beacause the theme/ idea is sooo good, but the follow through is just too poor to be playable at this moment.