It's a short and fun metroidvania experience. I really liked the concept of the robot putting itself back together as a way to gain abilities.
The gun ability is underutilised, as there is only one cracked wall that needs to be destroyed in order to progress in the game. There could have been more enemies to fix this.
The movement feels sluggish and hook is way too slow. On the other hand, the moving platforms are extremely fast so it's really hard to land on them properly.
Overall, it's a really nice game that needs a little bit of polish. Keep up the good work.