Looking forward to play this but at this stage i couldn't even do 2 long jumps in a row, this is because roll jumping seems to be more a random mechanics about pick the right timing only when physic will allow it instead of a combination of button, but i managed to learn side jumps and it seems you need to press forward while doing side jumps at the same time otherwise the next jump will not be enough high.
Walking speed is really low, i just roll all around and even learn some strange mechanics (longer you wait more far you will do a long jump) but could replicate the same jump twice, every jumps seems pretty random.