This was so much fun for a clicker, all the upgrades were really nice, and they encouraged different play style - Though of course fire all the way.
The art style and the effects are really nicely done too. I love the effects especially. I do think the game feels a bit slow at the start, which is not a bad thing - as the 10 mil+ dps at the end is really satisfying.
I do think that settings would be helpful with some stuff, though it's fine still not to have it for a jam game. I do feel like while the auto clicker is nice, I didn't like it personally and I don't think I was able to disable it after enabling it. There is already an upgrade that does that for you. Though I guess it does encourage the sword base build.
The upgrades like I said are all great, really nice synergies among them. Although some are obviously better which is fine for a clicker game.
One thing I would have liked is to have some stats, like total DPS being done.
And another thing, how and when upgrades are actually buyable, as I still don't know how that worked.
Apart from that the intro was done really well too, nice VAs! However there was 1 line where the voiceline did not play, and speaking of dialogues, I would like an option to skip dialogue lines rather than the whole intro - or rather have both options.
And my last suggestion would be to have a save system.
Elsewise, I liked this quite a bit. Really liked the numbers going up. Awesome work.
(My build as well, 73 mil base fire times 1250 is crazy damage
)