Controls:
Movement with A and D keys, hold left shift to run, spacebar to jump.
You should add a tutorial to teach the player how to play, also it would be cool to move with the arrow keys too.
The jumping in clunky, when you knock something it displays a debug message.
If you hold ESC key the pause menu will bug and open/close really fast.
The player sprite bugs a little sometimes.
You should add coyote time too i think.
Since this is your first game ever and you did it in five days, i'm gonna say you did well, i kind of get the direction you want from the game and i think you can accomplish it if you keep the scope small.
Good job and keep making games!