So first off this is, of course, a joy to look at and knowing Haven the printability of this entry is just off the charts.
The back panel's setup of the premise is great too - perfect little encapsulation of a dilemma and your goal. I can pretty much see a party struggling across the beach, carrying this big ol thing of cargo that's so precious, and the tension involved. That's without even remarking on the rest of it. Super awesome economy of words.
So color me surprised to find this is also a hexcrawl!
This could easily run 2 - 3 sessions and should be a really memorable little scenario.
The enemies, being mostly mindless or beasts, suffer a little bit from predictable motives but that's a nitpick. What I'mm really missing here is, if anything, some unexpected social encounters along the beach.