How to earn the “Mad Dash” achievement

The SMB team has said on Twitter that it counts a sum of the best play times in Hell.

From the Super Meat Boy Forums:

You must clear Hell, both light and dark world

The sum of your best times in Hell must be less than some threshold

Apparently, the threshold is 500 seconds.

Find the basketball hoop on the Detroit Streets zone and pick up the basketball from the ground with E. Aim at the hoop. Left click to throw. Repeat many times until successful.

This is a throwback achievement to the original Deus Ex where you could play basketball in the very same manner. As far as I can remember, there was a message that showed up when you scored.

In an attempt to hit the basket, try this: position yourself behind the center of the concrete barrier in the back left section of the court. Point straight at the center of the rim, then tilt upwards until you're pointing at the red line around the outside of the backboard. I've be able to consistently make it with this configuration.