great game! doesn't look like much at first glance but I actually found it quite enjoyable! I really liked the Idea and It's implementation. The game has some issues and is quite easy to break (just die a couple times to unlock the last sacrifice and then spam first and last to get bullets that are size of the screen) but it actually makes the game even more fun in my opinion.
A couple notes tho: the spider boss is quite tanky, I think it should have a bit less hp, because fight gets pretty repetative. and I think Player should have at least 1 sacrifice option from the very beggining, 'cause otherwise it's quite confusing when you're told that you can do sacrifices, but all available options are just "???" and nothing seem to happen when you choose that. Oh and also speed can go negative for some reason.

Overall very good game, I really liked it! would be cool if you'd check out my game too ;)