Band-Aid Level 7:
Wall jump once you are close to the saws, really close but not TOO close then jump and you now have the band-aid.
I got all band-aids at chapter 1.
AKblackKnight: Are you sure you went to mars? You may have mistaken the planet at the left radar for mars. Mars is at the very end. By that, I mean past the moon, at the very edge of the radar in the left.
Level 30 is like a race. Aim at the nearest pipe and launch it for the grenade to get through the pipe. Then, before the the array of boxes explode until the last box, aim at the 2nd pipe and shoot it to destroy the wall blocking the explosive boxes.
For those stuck at storage unit, click on the railing next to liam then click the pipe so he can pull it down. Then click the ogre. The rest is at the walkthrough.
Level 13 was a bit easy. Quickly aim the blue/yellow portal into the white spot on the ceiling then make a portal on the floor. 2nd part was less easier. Make a yellow portal across the hole then make a portal at the floor. Then shoot the portal at the wall that is beside the platform where the exit is. Make a portal at the floor then run. Its for level 13. Hope it helps.
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