Art: The cover art is nice and overall this is reasonably easy on the eyes. There are too many different accent colors without a coherent palette.
Writing: Clear and functional. There's not much to say here, because the writing is pretty sparse aside from game mechanics.
Game Design: I like the concept. None of the archetypes seem wildly over- or under-powered, although I worry about the "infinite money" sponsors as PCs. I'm not crazy about the decision to use character traits as "skills."
Theme: It's obvious how this is intended to connect to the jam theme, but the integration is almost non-existent. It's implied by the name that these characters are hunting mythological relics but I think there needs to be at least a little text block offering guidance on developing a mythology and integrating the hunt for relics into other modules or homebrews.
Layout: Pretty clean and effective. The "bonus notes" scrawled over the top make it a bit chaotic and don't add much. I'm guessing you thought it was too boring otherwise... I did the same thing last jam—adding stuff because I felt like every panel needed to have something beyond blocks of text—and ended up regretting it and going more minimalist in my post-jam version.
Utility: Seems very straightforward to use for what it is, as long as you have a plan for a relic hunt adventure and just need some character archetypes.
Favorability: Kinda middle-of-the-road for me. I could see dropping one or two of these archetypes into the right game, but reading it doesn't inspire me to run such a game.