-아/어도 'even if' plus 가다: 나는 귀찮아도 가야겠다 'I should go even though I can't be bothered', 수영장 없어도 가서 해도 되잖아요 'you can go and do it even without a pool'. 갈 길 가다 is a set phrase for carrying on down your own road regardless — 어수선해도 갈 길 가는 'keeping to his own path however chaotic it gets'. In one line 그래도 is the fixed word 'still, even so', not this pattern.