You're the first person to comment the drawn icons! They were in fact placeholders and were meant to be replaced later, but when we had little time to finish the game we realised they actually looked quite decent, so we focused on other (more important) things instead. So we're quite happy that that's something you enjoyed!
Also, jumping uphill is lowkey one of my favourite parts of the game because it sounds so ridiculous xD
Thanks for playing and rating our game!