Nice game
Just played it through a second time to get the Easter egg.
You need:
To be able to save and reload after quitting. It's not that bad since the game's so short I guess.
To be able to adjust the quality.
And to be able to use the arrow keys. Also jumping by pressing up should be an option. Maybe down to let go of a vine as well.
Of course there are a multitude of other problems as well. Automatically grabbing on to a previous vine. Not getting enough of a boost when you jump up to a room above and then just falling back down. That part where you have to jump a frog but there's a vine in the way. Lava rising when paused or loading rooms.
Anyway, there seems to be a way to muscle your way past all the glitchy situations, although maybe not on every computer, since gameplay sometimes seems afftected by loading speed. For the part where you're running from the skeleton cat I could usually jump both the lava and the frog at once, but sometimes it seemed like the frog was in a different place. Holding down the jump button can help in situations where you need to jump as soon as possible.
Definitely not a troll game. Just quaint.