[detruncate]

What's your read on Villain? What sort of range is he on when he limps into this pot? How aggressive is he? I'd usually bet/call the turn planning to show down vs a shortstack. You could bet/3-bet vs a LAG.

Villain's line is strange. I'd expect him to bet the turn if he's aggressive enough to cap the flop with 67. It could be he made his hand and decided to get cute (or flopped very big), but you're unlikely to be going anywhere after 3-betting the flop, so I want to know he's tricky before worrying too much about it.

I'm betting the river. The only question is whether to call a raise. Given the short stack, strange line, and non-obvious draw I could see showing down unless Villain is passive/predictable. In normal game conditions I'd bet/fold vs most players.