Villain unknown besides being a Scandinavian.

Flop and Turn seems default.

Turn, I'm betting every 98s cept 9s8s.

River was the tough part.
X/C seemed too cheap(especially when the villain bets like half pot)
X/R/C is clearly overplaying my hand.
X/R/F does not seem good since the gap between raise and all-in is bit thin so I'd rather Check/Shove.

So I figured B/F and betting big.

And hate my life when he jams. I did B/C after checking his nationality.

What's the right line here?

My line seemed suspicious so even leading out on the river myself, I was not certain whether I can fold this if villain jams.