completed mars lost civilization final mission and didnt get trophy

[ericph77]

i looked up some youtube vids of ppl doing the same exact thing(defeating all 4 main missions and then final mission) and they received the lost civilization trophy,but when i did it,nothing...... this a glitch? or is there no lost civilization trophy for the ps3 version? wich is what im playing on... i also just checked my in-game stats and it says i completed the mission, i checked just to make sure i wasnt hallucinating... ty