Only hands in his range I see that ends up on the river with no showdown value is backdoor spades. That is a very small bluffing range, however this will change drastically if he is a player that is capable of turning hands with showdown value into bluffs to fold out better hands like: Tx,Jx,QQ,KK and weak Ax.

This hand is a good example of a situation where most regs after checking the river will fold ridiculously often to a shove. He can represent really fine here by shoving so it makes a lot of sense to turn weaker hands into bluffs. This is very exploitive thinking obviously but good to keep in mind.

I lean towards check calling unless you got that range figured out already.

You aren't in love with it, but against most normal players you don't have much choice but to shove river for value. Especially with the Ac in your hand. Someone folding to 3bs only 50% will have a lot of other Aces that you didn't include, specifically all Axs I would assume.

You're not winning or losing much money either way. Tx won't call unless it made two pair, but with you having TPTK and blocking the NFD, you can't fold getting this price.
It's also not super likely he turns Tx into a bluff if you check, although I certainly don't think that would be awful, as it's near the bottom of his range. 

easy river jam, poor sizing on flop and turn. prefer chk call flop 

Loads of worse aces are in his range.  I'm no HU specialist but it looks like a shove from here.

C/c river is interesting with the flush blocker.

I would bet bigger the turn though. Shoving the river seems fine to me.