I'm really impressed that you took this on alone, I can tell you've done a lot of work to get to this. I like the setting and theme used and you tutorialise, which is something we didn't manage to get in.
Admittedly I couldn't get past the rabbit - I know in earlier comments you said to bow, but I've hit almost every key on my keyboard and in different combinations and I couldn't work it out, haha. So perhaps you need to explain to the player what the controls are somewhere (like on the submission or game page) so they can figure out whether they're doing something wrong gameplay wise, control wise or if it's just a bug. :)
I will definitely give it another go if someone can enlighten me on the rabbit puzzle!
Viewing post in Mesolithic jam comments
Hint: When the game starts it tells you how to move, by starting “Warm yourself by the campfire.” The rest of the controls get explained as you unlock them (and are disabled until you unlock them). In a “real” version of this game I would have liked to put in an overlay when you pause the game to display the controls you have unlocked along with a log of important text for each of the events.