No leech managed to reach a particular level (7)
I believe the answer is:
echelon
'a particular level' is the definition.
'echelon' can be an answer for 'level' (I've seen this before). I am not certain of the 'a particular' bit.
'no leech managed' is the wordplay.
'managed' indicates an anagram.
'no'+'leech'='noleech'
'noleech' is an anagram of 'ECHELON'.
'to reach' acts as a link.
Can you help me to learn more?
(Other definitions for echelon that I've seen before include "Level or rank in an organisation" , "Level or rank of authority, upper or lower" , "Leech on (anag.)" , "Level of people in organisation" , "Degree" .)