2.2. You shouldn’t begrudge your friends their success.
4.1. We must all contribute that no tricks or brutalities were beneat him.
4.2. We must do our bit that no trick or brutalities were beneath him.
These two make no sense.
6.1. It was rumoured that no tricks or brutalities were beneath him.
6.2. Rumours were circulated that he was against any tricks and brutalities.
This pair are opposites
"If no tricks or brutalities are beneath something", then they will resort to any trick or brutality to get what they want.
6.1 means that rumours said he was such a person.
6.2 means that rumours said he was not such a person.
"to be beneath someone" - "Beating naughty children is (morally) beneath me" = "I am (morally) above beating naughty children" = "I wouldn't beat naughty children".