$Freeroll NLHE MTT Deep Stacked: two pair vs runner runner flush and fold?

[jaworek1405]

full tilt poker Game #33145107748: Freeroll (257945901), Table 60 - NL Hold'em - 30/60 - 21:05:15 CET - 2013/08/20 [15:05:15 ET - 2013/08/20]
Seat 1: walgardd (2,655)
Seat 2: AcerPL (5,241)
Seat 3: odtedoa9 (1,335)
Seat 4: KrzyMor (1,010), is sitting out
Seat 5: mielo93 (4,000)
Seat 6: kasztelan2 (1,185), is sitting out
Seat 7: bejcho100 (1,485), is sitting out
Seat 8: 21radost (2,215)
Seat 9: aleks4eto (2,977)
AcerPL posts the small blind of 30
odtedoa9 posts the big blind of 60
The button is in seat #1
*** HOLE CARDS ***
Dealt to AcerPL [3s As]
KrzyMor folds
mielo93 calls 60
kasztelan2 folds
bejcho100 folds
21radost folds
aleks4eto folds
walgardd folds
AcerPL calls 30
odtedoa9 checks
*** FLOP *** [3c Ac 8h] (Total Pot: 180, 3 Players)
AcerPL has 15 seconds left to act
AcerPL bets 120
odtedoa9 folds
mielo93 has 15 seconds left to act
mielo93 calls 120
*** TURN *** [3c Ac 8h] [Kh] (Total Pot: 420, 2 Players)
AcerPL bets 300
mielo93 calls 300
*** RIVER *** [3c Ac 8h Kh] [6h] (Total Pot: 1,020, 2 Players)
AcerPL bets 420
mielo93 has 15 seconds left to act
mielo93 raises to 1,620
AcerPL has 15 seconds left to act
AcerPL calls 1,200
*** SHOW DOWN ***
mielo93 shows [3h 7h] a flush, King high
AcerPL mucks
mielo93 wins the pot (4,260) with a flush, King high
*** SUMMARY ***
Total pot 4,260 | Rake 0
Board: [3c Ac 8h Kh 6h]
Seat 1: walgardd (button) didn't bet (folded)
Seat 2: AcerPL (small blind) mucked [3s As] - two pair, Aces and Threes
Seat 3: odtedoa9 (big blind) folded on the Flop
Seat 4: KrzyMor didn't bet (folded)
Seat 5: mielo93 showed [3h 7h] and won (4,260) with a flush, King high
Seat 6: kasztelan2 didn't bet (folded)
Seat 7: bejcho100 didn't bet (folded)
Seat 8: 21radost didn't bet (folded)
Seat 9: aleks4eto didn't bet (folded)

What do do you think about this hand? thanks for help

 

[Jostone6]

it is always hard to play out of position, but had to fold to overbet on the river.

 

[ricksterrick]

Kinda a tough fold but yea people don't bluff raise river too often so I give him credit here. Even if he doesn't have a flush it looks like maybe A6 got there.