Just completed. I have this bad feeling that it took me way too much time than it should. I stuck a few times in places I should not. Mostly due to my stupid mistakes and sloppiness. This is another lesson that we should always stay humble and very watchful.
Overall the user part was IMHO basically great. Absolutely MUST DO for every pentester and red teamer. I really enjoyed this part. Kudos to the authors! I will rate the box as 5 just for this part.
Root not so much enjoyable, but well … let’s leave it.
There is enough hints in this thread so I will just give a general advice for this box. Do not hesitate using again what you already did use in the past. Keeping this in mind will help you a lot.
Many thanx to @Chr0x6eOs and @AzAxIaL for giving me a hand.