Bob must be woken by a dog, an alarm clock, a whale train and a manhole all in the same game session.
You must spend ten minutes of continuous unpaused game play in a level. To do this easily, begin any level and allow the game to idle, without allowing the game to auto-pause or your screensaver to trigger. Bob will fall down repeatedly for ten minutes. Note: Avoid levels that will cause Bob to wake up because of a whale train, a dog, or a manhole.
Do not touch the islands to the left .
Before attempting this, restart the game first. Then, each level must be completed in the same game session. Failing or retrying a map is allowable.