I like your attempt at a main menu! Though I'm a bit confused why you can restart the game on the main menu lol. I believe all the different functions are different scenes? You're better off using different canvases and turning the right ones on and off. Much easier.
As for the game itself, it was alright. The mouse feels really sensitive and that was something disorienting. Would have helped if the mini map showed which way you're looking. The levels were also pretty tricky, I couldn't get past level 2 & 3(3 was already unlocked when I went back to the menu). Which sounds sad. Maybe I need to git gud, tho a less steep difficulty would be nice. Instead of "jump over the wall until it works"
I like the direction you're going though, at least