Hm I don't think so, I could have sworn that crushing was unlocked for me to play.
After I beat it I ran around and collected the rest of the treasures and I think it messed up my placement.

Crushing was brilliant. It really tested your reflexes and ability to play the game, and yet it wasn't so hard that it was unplayable- having said that, I'd played it on Normal and Hard before. DO NOT try Crushing after only beating Normal. You won't be good enough. Play through on Hard first. Get any weapon trophies you don't have already, so you can just focus on staying alive (try and get treasures on Hard, too).

I found Uncharted on Crushing easier than Ninja Gaiden Sigma on Ninja Dog. But NGS was just ridiculously hard.

It's the second easiest hardest difficulty I've seen this gen- first would be inFamous on Hard. That was easy.

i finished Hard last may(i think) when inFamous was released... now i'm playing it on crushing.... and OMG... i was owned... my only trophy left in this game is the "Charted: Crusing", and the "Survivorman" but I think I can get the 50 kills w/o dying easily... now i just focusing to beat the Crushing difficulty...GRAWR

You can't get Survivor on Crushing. It's impossible. You'll have to play through on Easy for that one.

Also, it isn't PLAYSTATION®2, it's PlayStation 2. It's also PlayStation 3 now.

I am aware that i cannot do it on crushing... so i'm planning it getting on normal or easy... but as i said... it is easier to get the Survivorman trophy than the Charted: Crushing... so beating crushing is my priority ryt now

I'm at 80% of the game on Crushing and I must say it's not quite so hard