Two coins that can be used as backups for the standard route.
A backup blue coin if something horrible happens. To get back up, aim for a peak-height triple jump and hold up-left after the wallkick.
Note: The alternate and expert routes are coin-perfect, meaning you cannot miss any coins without significantly deviating from the route for backup coins.
Standard Route: Gets 13 coins at the start; uses the two beach coins as backups if needed.
Alternate Route: Gets 11 coins at the start; requires the two beach coins.
Expert Route: Gets 16 coins at the start; skips the pole coins, requires the two beach coins.
Align the camera straight with the tunnel and longjump up-left in the tunnel. Hold up-right for the second longjump and keep holding upright on the brown slope.
Do a quick single jump on the brown slope to get higher up, then A+B jumpdive. This will prevent the Fly Guy from trolling you.
The landing spot is important; you do not want go too far back or forward (see video).
After rolling out, go neutral and do a full-height single jump, then kick.
Double jump and nudge slightly towards the water before you ground pound.