How to render element array piece by piece
Succeeded it "my way". Template now looks like this:

&lt;form class{{ attributes }}&gt;

{{ element.output }}
{{ element.footer }}
{{ element.form_build_id }}
{{ element.form_token }}
{{ element.form_id }}
{{ element.actions }}

&lt;/form&gt;

element.output prints the table
element.footer prints the prices
element.actions prints the buttons
and other fields are printing necessary hidden fields


I know that @4k4 is right and I even tried solution he proposed before, but for some reason it didn't work for me (probably my mistake) and I didn't have more time to spend on this and this solution works well.

Posted this, because it's answer to this question and IMHO this should be "legal" way to print form, achieved only from twig without forcing on creating theme function and other stuff. 

Please be gentle with minuses.