Well, it works as a little game :)
There are some bugs, like the golem shouting even without the witch, Ifora spawning on platforms you cannot jump on.
To make a quick goal, you could have added a highscore system maybe?
Of course, you know it misses audio. It would have been nice to have some animations too, all the more because the sprites are looking good.
Also sometimes skeletons change their speed for now reason, as if they were glued on some part of the floor (maybe a random speed at some points in code, but it feels weird).
Anyway, quite good for such a short period of development. But my question is... Did you thought one week was too long, so you decided to cut it to 15 hours? haha You don't need to answer that obviously, everyone has their own schedule.