M - This will be on a ledge on the left hand side near the start of the level.

E - This is in the right corner by the exit of the room you drop in with all the Akrid and hives.

T - This will be between two sets of boxes on the right hand side in the hall with all the Nevec soldiers just after where you got the E mark.

E - After the Giant Moth destroys the boxes and you drop down onto the platform below the mark will be behind you in a corner.

O - This is in the same room where you get the VS at, it will be in the corner on the bottom floor.

R - Once you finally reach the top, the last mark is to the northeast of the data post up here.