After you have completed the tutorial, you will venture out into the world! To get this achivement, simply cross the bridge where the Apple Man is sitting (he gives you free coins btw) and head north. Head to the right of the trees that move (a boss fight) and you will notice a small land made bridge. This is not actually the edge of the map! If you proceed under the bridge and around to the right, you will appear on the other side! At this time the achivement should appear, and you have the added benefit of accessing more of the map even if you haven't unlocked the official route there yet! I hope this helps, if it does please rate it up so more people can see and benefit from it's secret!

Image 1: Cuphead at the start of the new world! You can see him just past the bridge heading in the direction you need to go.



Image 2: The start of the secret passage.


Image 3: Welcome to the other side Cuphead! Now go explore some new areas early!


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