Levels contain many different environment types, including cities, forests, and bogs.[4] At the end of most levels, the player collects an item called a core or a shard;[1] occasionally, the level begins to disintegrate once the Kid takes the item, forcing him to hastily retreat. As the player progresses through the levels, a voice narrates their actions. This narration gives scripted plot information as well as dynamic comments, such as on the player's skill with a weapon or performance while fighting enemies.[4]