villian was minraising IP alot and 3beting OOP alot aswell, but on flop and turn he was very passive , check calling with good hands like top pair or set or check folding when miss.
Did not see any spew from him though.
When I started donking OOP on dry flops he started to 3beting me.

Boss Media, $15.00/30.00 No Limit Hold'em Tournament, 2 Players
Hand Converter by Pokerhand.org

Board:
HERO: $1,350
Button: $2,650

Dealt to HERO 6 5

Pre-flop:
SB raises to $60, HERO calls $60

Flop: ($120) T 3 3 (2 Players)
HERO bets $60, SB raises to $140, HERO calls $140

Turn: ($400) 6 (2 Players)
HERO checks, SB bets $270, HERO calls $270

River: ($940) 8 (2 Players)
HERO checks, SB all-in $2,180, HERO all-in $880



My plan on flop was to bet and if he calls to give up, and if he reraises (with a 10 he wouldnt do it most likely, and woulnot bet turn for sure) to min4bet flop or ch/r turn or bet river if checked to. So when the turn comes a 6 I decide to just call and let him bluff river. But now I 'm not sure if river is a good call, because my hand looks like a Ten, and I am not folding it in his eyes.

So please tell me how should I have played it, thx.

"but on flop and turn he was very passive , check calling with good hands like top pair or set or check folding when miss."
Easy fold on flop.Even if board is pretty dry plenty of things that he'll raise and continue on turn and you don't have any equity whatsoever.

he was passive OOP,
the thing is IP he started raising my donk bets with non showndown-value hands and flating with good holdings, so his raise was expected (giving us info he has probably nothing) ;
to sum it up> isnt it a good spot to take a pot? if not then check/fold flop?

nvm

Fail on reading hh from my part,thought you were in position.

Donk 3bet to like 320 is fine imo,seems he is the type of player that wouldn't play back a lot.Yeah you don't represent much,but people aren't as likely to rebluff shove on a flush draw board,because you could easily have the flush and call. Don't really like donk calling his raise since i'd expect him to bet a lot of turns and c/shoving turn with no equity seems suicidal.
As played i probably call turn too,but def folding river.

so he raises ur donkbets a lot so then you donkbet six high and float with it cause you want to win it later...ok

You make it sound stupid that way