Torvus Bog is really where the best and the worst of Prime 2 shines through . The music and atmosphere is among the best in the entire franchise , probably the best , and Chykka is as mentioned a great boss . But then you have the excruciating backtracking , the at times confusing and convoluted map layout , and the Boost Guardian . Plus , it ' s a combination of a swamp and a water level , which are both generally considered to be the worst kinds of level in gaming . Torvus Bog is also where I stopped playing as kid , and on repeated playthroughs it ' s the level I struggle with the most , but the older I get , the more I appreciate the better and excellent aspects of its design . <| sep |> Middle school burn . Nice .