100 Doors X By: MPI Soft Walkthrough: This is a walkthrough guide for anyone who needs help, hints, tips, cheats, solutions or answers for the iPhone/Android game, 100 Doors. Door 1: Press the green "up" arrow, then enter through the door. Door 2: Tap the framed photo and take the key that's revealed. Use the key to unlock the door. Door 3: Door 4: Door 5: Door 6: Door 7: Door 8:…