Fine little game.
I feel like it lacks a bit of consistency however.
I mean, obstacles are randomly blocking a cell for a few seconds, but it does nothing more. So I ended up just looking at inspector tic part of the screen and force my way until it worked.
If the timer is important, then I feel like the randomness of the obstacles is too... random, especially since the goal can also be blocked randomly haha.
Maybe having a randomly genereted path would be a solution. But I can feel already the time it would take to implement though !
Anyway that some details, as I said, it is a fine little game! Well done.