This was a genuinely fun one to play! The robots keep you on edge(you picked good sfx and music for them too, its pretty unsettling!) and the idea that you have to switch tools is also fun.
Restricting the view of the maze actually makes it pretty fun to try and remember where that last turn you made was, and the distance meter is also a fun idea!
Only thing I would suggest is adding actual collisions for the bot, as even if you fire in its direction, it won't detect unless you click the square it is on(which can get quite difficult if its moving quickly towards you). Its about the only thing I would change though, the rest is really good!
Btw did you make the art for it or was it from an asset pack, either way it looks great!