It’s an easter egg I put there :)
Ok didn't know if it was an Easter egg or a glitch :))
The rock whatever tile could be breakable with "something", maybe a projectile
The blue whatever tile could be used to be something that blocks projectiles and lets the player pass through it
The white whatever tile could be used to reflect projectiles since it looks metallic
very fun game and nice that you put it there:) cant wait for more