Thank you for making that video and for your feedback! Watching you play is very helpful to me as I can better pinpoint what needs to be modified.
I agree with you about the difficulty. A lot of people have complained about it aswell as the weird control scheme.
I am currently working on an update that will drastically decrease the difficulty and change the default keyboard bindings (the mouse will be usable and hopefully be more intuitive).
It will be probably be out near the end of this week. I'll also take a look at that jumping issue you have pointed out.