you kill the boss and not the normal soldiers (or left 1 alive) if he dont drop a treasure or the treasure that you dont want, kill yourself or get killed...and repeat till the treasure drops..
if you are on a checkpoint you failed at the 'trick'
a user there get skelzor by doing this
and my brother and me get a treasure for donut drake (still 1 left)
yeah thats exactly what ive been doing with my bro :p he got 2 of the treasures for the set without looking for them then saw that we only needed one more for the genghis khan skin. wouldnt mind getting skelezor either though. he was always my skin of choice in uncharted 1 and 2
You know a 90 average can get me a $10,000 scholarship for university. I guess gamers are like Asian parents, "90, why didn't you get 100?