Don't do it just because time estimate is 2-3 hours and it has a 1.8 ratio. The ratio lies! Extremely skill based.
The leaderboard hunting experience
Light up the crane and billboard at sunset. - A Memoir Blue
Find all secret areas in the game - South Park: Tenorman's Revenge
Complete every level in any mode with each of the 4 characters - South Park: Tenorman's Revenge