Any comments on this hand? Should I have raised PF? I thought that with so many limpers I don't want to risk getting 3bet with just 22, but being CO maybe I should have worried less? Also (and I only just notice this now) 2 'limpers' were actually just posting blinds out of turn...
As played, should I have shoved the river instead?
Got really desperate there trying to keep someone in the hand...

I have no reads on villain, it is literally the first hand we play. I figure he has an overpair, or a 6.

PokerStars No-Limit Hold'em, $0.02 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

MP2 ($1)
MP3 ($3)
Hero (CO) ($2.43)
Button ($2.03)
SB ($3.29)
BB ($1.08)
UTG ($2.80)
UTG+1 ($3.78)
MP1 ($2.44)

Preflop: Hero is CO with 2, 2
UTG calls $0.02, UTG+1 calls $0.02, MP1 calls $0.02, MP2 (poster) checks, MP3 (poster) checks, Hero calls $0.02, 1 fold, SB calls $0.01, BB checks

Flop: ($0.16) 2, 2, 6 (8 players)
SB checks, BB checks, UTG checks, UTG+1 checks, MP1 checks, MP2 checks, MP3 bets $0.06, Hero calls $0.06, 6 folds

Turn: ($0.28) 10 (2 players)
MP3 bets $0.06, Hero raises to $0.30, MP3 calls $0.24

River: ($0.88) 4 (2 players)
MP3 bets $0.08, Hero raises to $0.50, MP3 calls $0.42

Total pot: $1.88 | Rake: $0.05