300 March to Glory (PSP)

[imhotep]

Hi all! I wonder if anyone has completed this game.
Well I have completed it three or four times now,and have bought every single weapon,combo and power.
But,the only thing that eludes me is the Lambdas pick-ups which recovers all your health and yellow energy bar.

I have all but two Lambdas to find,and they seem to be very elusive to find out where they are.
I have a vague idea on where the last Lambdas pick-up is on the, THE THIRD DAY section part of the game.
I have replayed that part and I think I might have spotted it in the distance where I am fighting the smaller black-clad Immortals with shields.
However,the other Lambdas pick-up I am trying to find is in the PERSIAN CAMP part of the game.I have replayed this section quite a few times now,and I cannot seem to find it anywhere.
Has anyone got the all the Lambdas pick-ups in this section of the game?
If anyone can help,please,please can you tell me where I can find the last remaining Lambdas in the Persian Camp.Many thanks!!