Srsly, how do you play this?

The flop lead is ok I'd go a little more on the bigger side since so many people are in the hand and thining the field with TPBK is usually the best thing to do here, but checking is something I would have done as opposed to betting, it keeps the pot small in a marginal situation at best and it's easy to let go of the hand of the action gets too heated. Now that 7 coming on turn does give you an open ended straight draw to boot with TP but I still think this is where you should have released the hand, and if not on the turn then definitely on the river. This board is hitting everyone's limping range to a tee so really you could be just drawing to the idiot end of the straight, or a chop at best. Very unlikely for you to get paid off huge if you make your straight, and you lose a bunch of money if you make the 2nd best hand since I highly doubt you're ever folding if you make your hand. River is definitely a fold imo if he's value betting into 2 people then he can probably beat 3 10's and if he is honestly bluffing with that bet then he's a damn fool since he's given a ridiculous price to call to see his hand.

Yeah I guess the turn is a pretty clear fold after this analysis. I'm still calling the joke river bet though. Thanks bro!

Btw, I finished 7th out of 1.100+ field ^^

Yeah calling the river isn't terrible. And players in these types of tournaments do weird and stupid **** all the time so I can't fault you for calling. If you've made it that far in the hand you may as well see what he had. Nice run too!