Here's my feedback:
- Colors are too saturated and some colors don't match
- The game doesn't have a consistent pixel size so the slime for example looks much ugly
- The sounds are played after a delay like jump for example
- The fixing sound keeps repeating after being played and kind of lags
- The losing sound effect and fixing sound effects don't match really and losing sfx is kind of goofy
- When fixing the platform when it moves downward , player isn't able to jump which isn't realistic because player should have it's same velocity instead of moving down and stopping then moving down again.
- Game is honestly so short , many stuff could have been added to make it interesting
- The second platform also somehow collides with part of the tilemap
- There is a slime that floats above the tilemap slightly , you could have put some effort into making it on floor
- It made a small use of theme with 'fixing stuff' but yet it isn't the one of the best that made use of the theme
Good job on your game .