A little daunting to pick up at first, but once I got the hang of it, I really enjoyed this game. I've been interested in similar thematic concepts in one of my previous projects, but I feel like you did a good job making this experience hectic and fun.
Maybe because I didn't make it far enough into the game, but it seemed to me that the wrench was by far the most useful tool in the game. The boiler(?) needing the most maintenance and a different tool to fix was a good balancing choice, but if I had time that meant that I could just leave the tool needed to fix it by the machine. (I really enjoyed having the ability to duct tape broken elements.) Even with just those two tools, it was a plenty hectic experience. I don't think I would be able to handle much more. Just because I'm stubborn, I didn't ever want to jettison my passengers, though from the gif in the page it looks like a very fun animation. I almost wish there were breaks between levels so I could better appreciate the art and the level. If there were time for polish and whatnot, I would like to better see and understand my score at the end of the game too.
Not a problem or something in need of a fix, but it was interesting to me that the ladders were faster to go down (since you could jump off) than climbing up. The level design is simple, but well-thought out in my opinion.
Visually and functionally, a very complete and fun experience. The audio unfortunately became repetitive relatively quickly. Nice work!