This was really fun! I love vampire survivors and it was cool to see it recreated in pico-8 with a bomb theme fitting the jam :)
The level of polish felt quite high, the art was good, you had some fitting music that was pretty good as well (if a bit repetetive) and some nice sound effects.
I do think that one of my favorite aspects of vampire survivors was missing, which is when you have huge waves of enemies that all get melted. I figured it was an engine limitation though, as when I got deep into runs the game would start lagging a lot even with just 100 enemies on screen.
I also found it a bit too easy, but that might just be because I've grinded a lot of vampire survivors. On my second run I was basically unkillable and only died at level 50 or something when the game was lagging so badly I couldn't tell what was happening.
Overall a really impressive submission, doing this in pico-8 seems insane to me so I was blown away by that, as well as with the number of abilities and characters you had, really well done! :D