I'd have raised to at least 60 preflop with all the limpers. Don't expect players to be limping in with hands that dominate you, especially in a $5 SNG. Then I'd bet the flop pretty strong with all the draws out there. All in on the turn if you're not raised on the flop. If you are raised, shove in. From the preflop action its very doubtful they have AK or a set, so the only realistic hand that'd beat you is the straight. Your short stacked, gotta go for it.

If you don't raise preflop, I'd check raise the flop, looking to go all in there or on the turn depending on the action.

I'm looking to go all in before the river not really because I'm scared of them calling with a draw, but because I'm hoping they'll call me on some crazy draw and I can double up off of them, particularly on the turn if its safe.