Answer, inserted missing commas : In the dark, the comic book store brought an ancient memory to him, one of his relatives fighting at the great Osaka Castle. He forced himself to climb the rain gutter with his bare feet, little nubs that the other ninjas made fun of. He located the security alarm, a gray metal box at the back of the building, and whack-attacked it with his foam munchucks. His tools helped him carve a clean circle in the large glass window, and he slipped through the hole, an opening almost as tall as his body. As he slipped stealthily through the dark store, his feet barely made noises, no tiptoes or thuds. The shelves were lined with collectibles, action figures, and comic books, but he didn't stop for any of those. He crept to the back room, an office with one strong shelf over the desk, and stared at the glass case protected by lasers. With lightning-fast ninja speed, his fingers darted between the lasers and sliced the glass, a much thinner pane than the outside window. He slashed and slashed until he watched the case, his last obstacle, fall to the floor. Then he reached in and grabbed the manga, his prize. He had done it. Scott, the ninja everyone thought was such a scaredy, had done it.
Extra : There are no appositives in the given text. However, there are some noun phrases that can be considered as positive phrases. Here are the positive phrases underlined:
"an ancient memory"
"little nubs"
"a gray metal box"
"his foam munchucks"
"a clean circle"
"the large glass window"
"the dark store"
"the back room"
"one strong shelf"
"his prize"