Cool submission, well done!
The tutorial text overlaps a bit with the menu, there are two ways to fix this that i can think of. The first one would be to add a background to the instructions, even if it's a flat color staying withing the game's art design. The other way would be to hide the main menu while the "how to play" is shown, and turn it back on when you close it.
The pause menu, you can make it appear while on the main menu too if you press ESC while being there.
The game is fun and in one of the attempts i've spent the time smacking robots just for fun xD
Cheers! i hope this helps :D