2/4 NL KK on scary board against movemaker

Prima 2/4 NL 6 max

Villain has come over the top on me a couple of times, doing some delayed bluffs on scary boards and seems to be a real movemaker...
So I don´t have much respect for him which he probably knows since I´ve 3-betted flops against him with rags and showed it just to try to keep him honest...

He´s been doing ok though since he has 1000$, I have about 700$

> Utg called for $4
> Utg+1 folded
> Hero raised for $16 med K [img]/images/graemlins/heart.gif[/img]K [img]/images/graemlins/spade.gif[/img]
> Villain called for $16
> Sb folded
> BB folded
> Utg called for $12

> Dealing the Flop(8 [img]/images/graemlins/club.gif[/img]2 [img]/images/graemlins/club.gif[/img]4 :diamond) pot 54$

> Utg checked
> Hero bet for $44
> Villain called for $44
> Utg folded

> Dealing the turn(5 [img]/images/graemlins/diamond.gif[/img]) pot 144$

> Hero bet for $128
> Villain called for $128

> Dealing the river(7 [img]/images/graemlins/diamond.gif[/img]) pot 398$

> Hero checked
> Villain went all-in for $882

What´s my line for river?

Didn´t want to blockbet the river and fold to a push, right or wrong?

I have about 500$ left, how do you play river given the reads on Villain?