This is well done! I think its my first 5/5 in all categories and general presentation.
The world building at the start, the little flavor, the nice composition of elements. I love the characters and tiny snippets of personality to each individual. Also screw the rats, never wanted to chase and bash in a while lol.
I enjoyed it thoroughly and the checkpoint system is well integrated. Making failure tolerable and a platform for continuing the battle further. The final boss felt like a nice finale, although I do wish that controlling the board and keeping the region clear of fixes or mouses would have some reward, rather than going for complete focus on the boss and only going through and fixing when time is running out. Mainly as a reward and encouragement for the player's mastery of fixing so far.
The audio is not only good but also dynamic, as it slowing down as the timer reaches 0. I love just the compositions and emotions and movements through the music, and definitely something ill check out again later.
I love the incorporation of the theme in its art, setting, main mechanics, and the timer, it's a countdown to try to get the clock tower as stable as possible after all!
Other than that, there may be a few things that might be adjusted, but they feel like nitpicks (like shading on the pipes type level of adjustments lol).
I've got [46 mins remaining.] but I knew I had to stop by and rate this, thank you for creating such a wonderful piece for the game jam! I'm glad to see this here!