This was cool! I love how you had to manage different valves as the engineer made his way through the terrain! I think it might've been easier if you hid some of the game mechanics at first, and then revealed them later on in the game to make the on-boarding process much easier for newcomers - introduce one mechanic at first, but then reveal the rest of the mechanics as the player progresses throughout the game. Maybe you could add a mechanic where you have to prevent flooding in the cave by redirecting water with a puzzle? Either way, I'm glad you were able to complete this by yourself - I know you were trying to get it done before the deadline so I appreciate you being able to finish! Good luck with the rest of your jam - I hope you had a lot of fun!