Introduction[]
Hasty is an Infinite Mode Achievement in Run 3.
Suggested Characters: 
Gameplay[]
With his ability to attract toward power cells, the Gentleman can simply fly over the whole level. With proper maneuvering, this eliminates the need to use the bridge entirely. To help, let go of the magnet before grabbing a power cell and then reapply the magnet to gain extra height after collecting it.
The next best characters are the Angel and Lizard. Both characters are much slower on fast conveyors than average, which gives them more time to move sideways along the wavy bridge of this level. Additionally, you can lose most of your speed by walking across a 1 tile gap. The Angel also has his dash, which can be used to give more freedom regarding the one allotted jump.
Most other characters are around the same effectiveness in completing the achievement, hence why they are not suggested. However, here all the strategies for each viable character for sake of completeness. The Runner has good strafing to stay on the bridge. The Skater and Child have below average strafing, but they have the added benefit of being able to take a long jump at the end of the level to essentially just skip it. The Student can flip gravity right after falling off an edge (which does not count as a jump), giving her an extra recovery method not available to the other characters. Do not use the Bunny, Pastafarian, or Duplicator, as the first two are disqualified and the Duplicator's ability to duplicate counts as a jump.
It is highly recommended to click on this achievement's icon in the achievement menu - a feature that increases your odds of encountering its level by six times. Due to how late in Infinite Mode's queue this level appears, this will not affect your chances of encountering any of the other achievements.
Walkthroughs[]
(With Gentleman Abillity)
https://www.youtube.com/watch?v=ZTJogpbxZKw
(With Child)
Run 3 Hasty Achievement Guide