Opp's stats were 18/5 over 153 hands, he is a losing player (-11% ROI, -$2369 over 1k games). The safe play is definitely to fold with 9x BB left, but we are getting 2.4 to 1 pot odds and the river shove could be a bluff...

PokerStars No-Limit Hold'em, $25+$2 Tournament, 50/100 Blinds (6 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

Hero (Button) (t1495)
SB (t2595)
BB (t2180)
UTG (t2480)
MP (t1390)
CO (t3360)

Preflop: Hero is Button with A, 8
3 folds, Hero raises to t250, 1 fold, BB calls t150

Flop: (t550) 6, 8, 10 (2 players)
BB checks, Hero bets t350, BB calls t350

Turn: (t1250) Q (2 players)
BB checks, Hero checks

River: (t1250) 2 (2 players)
BB bets t1580 (All-In), Hero ????