Code: Complete Game on Hard setting
Metal Body
Code:use the alternate crossbow to break open the door near the base of the statue that you must knock over to make a bridge in mission. the glyph is behind the door
Metal Fiend
Code:As you ascend the waterfall during mission 6,look out for a rock with a grapple point above the rock is the glyph.continue to the top of the waterfall and then drop down to collect it
Big Melee
Code:This cheat glyph can be found inside one of the coffins in the mausoleum during mission 3