Devil May Cry HD Collection

There are 12 Secret Missions in total, each of them will reward you with Blue Orb Fragment for completing them. Beat all 12 missions to earn this. It doesnt matter what difficulty you play on, but they all must be beaten with the same character. In contrast to the achievement in the first game, you may want to wait until your second run through to try for these, as many are quite difficult and require specific skills and/or weapons which can't be purchased/obtained until late in the game. These are where the missions are located:

• Secret Mission #1: Located in mission three on 13th Avenue, through the Double brown doors next to a bin on your right
• Secret Mission #2: Located in mission five. It's the strange looking face with red eyes on the wall behind the lift.
• Secret Mission #3: Located in mission seven in the Dark Corridor. Jump up the wall to the right of the door on your right-hand side and it will be above the light.
• Secret Mission #4: Located in mission eight. You'll see a pirate ship from the ledge you climb to, it's in the hull of the ship. You need to break a barricade to get in.
• Secret Mission #5: Located in mission nine. After you enter Limestone Cavern, you should see an opening on your right. Jump up there, follow it around until you see the red crystals and press on them.
• Secret Mission #6: Located in mission ten in the Subterranean Lake. It's to the right of the statue you gain access to with the Stone Mask.
• Secret Mission #7: Located in mission twelve in a secret room above the ledge next to the yellow looking door that leads to/from the Altar to the Evil Pathway.
• Secret Mission #8: Located in mission thirteen in the Spiral Staircase. About halfway down, you'll notice one light feature is red. Press on it.
• Secret Mission #9: Located in mission thirteen in the Vestibule. After solving the light puzzle, look in the room you broke the wall to enter into for a torch on your left. It's in an alcove above that torch
• Secret Mission #10: Located in mission sixteen in the Waking Sun Chamber. It's on the right-hand side in the alcove that opens up after you destroy the ball.
• Secret Mission #11: Located in mission seventeen in the Pitch Black Void. Jump up into the rafters/beams above you and look for a statue that is lit up.
• Secret Mission #12: Located in mission eighteen, it's on the base of the statue of the foot. Follow a hidden path on the left to get to it.

For help with the actual missions, refer to this guide.