wow! This is a really ambitious game for a one month jam!
And I'd say you got a pretty good start on it for just a month.
about the map, I don't mind the lack of mini-map, I am not a big fan of those anyways. But it would have been nice if the full map filled in after I visited areas. Just having it always blank is kind of a bummer and not overly helpful. I did like finding the torn map and having it point me towards the temple. That was really cool.
I figured out how to swing the pick axe but only after I realized I had to equip it first. Consider having the sword and pick axe equipped from the start.
I really dug the contrast between wandering, exploring and mining the big bright outer world and then platforming in the cramped dark temple.
For me, the platforming in the temple (I got to the on in the lower left of the map) was really way too hard. The vine jumps in particular were hard. They're not impossible by any means, but they did require pretty precise timing for a first temple. I would suggest dialing them back a bit (giving more overlap between when the different rows appear/disappear) and then slowly ramping them back up as you get deeper into the temple.
well, just my two cents. Overall, I'd say great work. This is seriously /a lot/ of game to attempt in one month and you got a lot of it right. Color me impressed! :)