I never claimed to be the toughest
Though I’m to blame for a few faces reconstructed
It’s the game that we was stuck with

from Nas – A Queens Story Lyrics on Rap Genius

Meaning

Nas is honest about where he stands today by professing his vulnerability as a human being. While he acknowledges that he’s not the grittiest, he has still responsible for the damage he has done to individuals as a result of his street upbringing.

This could also be a reference to this line from Memory Lane:

Here’s my basis, my razor embraces, many faces

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