Nice, the thumbnail makes you want to click, nothing more to say than what others have already said.

Nice simple game. 

Stuff I like:

The easy to understand gameplay.

An actual tutorial. (not just a wall of text on the game page or something similar)

My main criticisms:

The player sprite looks wierd and blurry.

The bat is basically a non threat and is too slow. 

The lack of a proper end screen.

it's simple but buggy

Simple game.

I won! (= I hoped for some animation with the red car.

During the first playtrough I did not see the bat at all. I think bat should move faster. And main character as well. Also for climbing I suggest to implement holding a space instead of spamming.

Also I suggest to add an end state, when you reach a car. Some win scren or starting menu. Or you can just fall of the map. (=

The special object isn't implemented in the game but the theme implementation is alright. You move quite slowly and the jump is a buggy when you are moving against a wall at the same time. The level is confusing and the dead ends are annoying. Other than that the game is fine, having a more cohesive level and more pressure from the bat would be better ;)