Complex sentence: Special Stages are entered by finding an Emerald Item Box after collecting 50 rings and completing a task, such as navigating an obstacle course or completing a minigame, before fighting against Nack for the emerald.
Split into simpler sentences: Special Stages are entered by finding an Emerald item box after collecting 50 rings. They involve completing a task, such as navigating an obstacle course or a minigame, before fighting against Nack for the Emerald.