To unlock the "Be Careful What You Wish For" achievement, drop non-essential items (like the Toy Dino or Deck of Cards) down the chute in the bathroom. They will transform into one of six random items (e.g., Beanbag, Doll, Puzzle Cube) found in the laundry room basket.
Focus on collecting every item, finding all seven monster photographs using the Haunted Camera, and experiencing 10 unique ways to die (e.g., staring at your evil twin in the mirror). Goosebumps: The Game XBLA - Xbox 360 [Arcade]
For on Xbox 360, a critical strategy for completionists is planning for two distinct playthroughs. Most players focus their first run on exploration and "missable" objectives, while the second is a strictly optimized speedrun for specific turn-count achievements. Key Strategy: Two-Playthrough Approach To unlock the "Be Careful What You Wish
If you wear the Haunted Mask, you will die every few minutes unless you use the Face-Lifter chair in the mall's back passages to remove it. For on Xbox 360, a critical strategy for