Really nice game!! Graphics are top notch and the grappling feature was awesome! It took me a second to understand using it at the right time to propel myself up but once I did it was pretty fun. Like others mentioned it might be worth increasing the usage time to be more forgiving! Unfortunately I couldn't figure out how to collect sap but did make a deal or two and found 1 key!!
Initially I could see no way to start the game on my screen, tried clicking every key and mouse click but nothing. Luckily some comments mentioned UI scaling so I zoomed out my browser and could see the menu buttons!! My audio cut out randomly about 5 minutes in but otherwise a really well polished game with great art, atmosphere and mechanics!!