I think it's nice puzzle game. I first thought that "player" moving randomly was kinda stupid but I realized that it's supposed to be a clueless "player" that you help get to the goal :D
I think the theme would have been better served if the block you move with WASD would have been exactly like a wall block. Now it kinda feels like I the player am just player trying to get a block to the goal.
Other than that I think this is great. I played it till the end and didn't encounter any bugs. Good job!