EDIT: There we go. All finished now.
I have a good idea on where you are stumped in the Subspace Bomb Factory, as well as the Battleship Halberd Exterior.
In the former, go into the first optional door you see. You will be taken into a room with two green boxes, along with six rotating platforms. In this room, there is a springboard. Hop onto this springboard, and you will be hurtled off of the camera (it won't kill you, though). There is a yellow box off-camera that can only be accessed by jumping on this springboard. Do an aerial attack, and you will (hopefully) destroy the box. If you succeed, you will hear it's destruction, and a trophy will gracefully float to the ground. Grab this trophy.
In the latter, advance until you start encountering the green, floating bombs. Dispatch the first of these you see. You will be facing a large, metallic obstacle that is shaped like this:
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_| |_
|____|
Go beyond this, and you will encounter a group of Mites, and two more green bombs. Examine the ceiling of this area carefully, without destroying the bombs, and you will notice a large crack in the ceiling here. Kill the bomb so that it is directly below the crack. That part of the ceiling will then fall, and a trophy will appear!
This is, of course, assuming you got stuck on the same things I got stuck on. I hope this helps.
