Nice prototype, I like the art and the gameplay, although the map feature allows to exploit enemy pathfinding as other people already mentioned :)
I also really like the music theme, it has strong kinda Undertale vibes that puts the game in kinda cool not-so-serious setting, and these robots became not so scary :)
There is a bug though, shortly after level 5 (at first i read it as LUL 5 lol) the collisions stop working and it's impossible to kill enemies. In the console there are messages that amount of collision objects is > 128, so I assume you don't go.delete() enemy objects on death and just hide them?