I like the use of the masking mechanic to hide the triangles, though probably make it bigger so its easier to scan the area, enough to know where I'm heading isnt a deathtrap at least lol
Also, I think I failed the last level, but my guy still went into the blackhole, might be a glitch or something. And maybe use a variety of shapes instead of triangles, like using bars to form a like maze.
By the end, it was an enjoyable little game.