Up to river seemed standard. When he raises, the only value combo he reps credibly is 44 or rivered 2 pair, maybe 56s but most would barrel turn. He also has a lot of random air in his range that bet flop and x back turn (assuming he is using this sizing with close to full range). In general river raises are underbluffed so to exploit this should we just be folding all our bluff catchers and just call with our strongest hands (2 pair+)? In terms of bluffcatchers, this seemed like quite a nice hand, blocking some 2 pairs and any straights.