Hey, thanks for the coverage! I really appreciate it :-)
For the controls, they were re-purposed from touch controls on a tablet, which is probably why they're a bit wonky. To look around, you have to hold down the left mouse button and drag around (then release when you're done looking around). To launch, hold down both left and right mouse buttons, then drag downwards to build up your charge (and release to fling him forward - this you kinda got already though from what I saw in your video).
It might also help to change the language to english - in the main menu, click on 'indstillinger' to go to the settings, and click on 'dansk' to change it to english.
Hope this helps!