Cover: impactful cover with stark, arresting white background and effective use of fonts and public domain art.
Interior layout: continues with the stark minimalist theme. Everything is clear and immediately makes sense. The interior artwork with table “The ascent” underneath tells you at a glance what this adventure is about and immediately sets the mood. The layout of hexes on the back page is very attractive (though it was less easy to see how the hex illustrations relate to the text).
Adventure setup: OK, so they have to climb a mountain. The why is left to the GM. Might be nice to have some lore about the mountain or suggested adventure hooks to give the motivation.
Climb mechanic: 1d4 days for a lateral climb, 2d4 days for a vertical climb. So in the end, it’s the same either way, except a vertical climb has less encounters. I think I’d like to see a different benefit/risk profile for the two approaches (vertical climb takes less time but more chance of injury or whatever).
Scavenging: do all the equipment items have some mechanical effect? Rations is obvious, it’s the main resource that needs to be managed. But does finding warm and dry clothing or tents help the party in some way?
Otherworldly phenomena: When do you roll on this table? What are the mechanical effects (e.g. of low gravity)? “Walk on ceiling”: it doesn’t seem there is a ceiling to walk on?
Random encounters: are these creatures listed in the rulebook (Sorry I have not played Into The Odd)? Otherwise a few words of description would be helpful (What is a Biolith for example?)
Encounter hexes: You succeed in capturing the atmosphere and mood of each hex in one sentence.
The summit: The shack is a Greater Arcana? I didn’t understand that, but again I may be missing some info that is explained in the rulebook.
So there is a final combat and… a ghost town? It seems like a strange thing to find on top of a mountain. If there is a town then it would be reachable by road? Or … airship? I feel the presence of the town needs some explanation.
Overall: The premise of an ascent on a mountain is interesting and you do a good job of creating interesting and atmospheric encounters on the way up. Layout is beautiful. Having a hexcrawl mountain ascent is a great idea.
It does seem to me (without having played it) like success or failure is a bit random. You get 30 days rations and you have to subtract 14d4 days rations (minimum) to reach the summit = 35 rations on average. The chance of finding more rations is 1 in 10 every 2 hexes = 17% chance of finding rations if you take the direct route, 47% if you take the lateral route. So the chance of making it to the top without running short of rations is a little less than even, and it doesn’t look like there is much the party can do to improve those odds. Chances are they will all die on the mountainside like their predecessors.