Full disclosure: I got to playtest this product for free.
I played through this last weekend and highly recommend anyone giving it a go!
The hex map and open-ended challenges and prompts combined with a story that has a specific beginning and end worked really well.
Wendigo is a good solo game for when you don't want to just wander around or figure out your own story but still feel like you're experiencing a story game and not just rolling dice overcome challenges like a pure board game. I also love the definite end-point. I don't have to wonder when the story will feel "done enough."
It also offers the rogue-lite (to borrow a video game term) element of permanent upgrades between playthroughs to incentivize playing again. I don't think I would be able to jump right back in, myself, but I could see trying again after a while. I also imagine it would be a bit of a changed experience because of character advancement.
Wendigo is an emotional and intense solo/journaling RPG without being over-the-top and, again, I definitely recommend it!