@BalrogDeMorgoth
Don't forget that he spent 10 years just smoking and drinking before s1 began. That and age can take a real toll. Plus they literally stabbed him instead of fist fighting in s1.
I'm not sure if you guys noticed it, but the way he's gradually changed his appearance has been really subtle. Seriously great art and progression by the author and illustration team.
Just look at ch 1 vs 15 vs 34 vs 49!