Introduction[]
Wind Sailor is an Achievement in Run 3.
Suggested Character: 
Gameplay[]
Four characters can earn this achievement: the Child and the Student can earn it on part 11 of the Box Storage Area, the Gentleman can earn it in Infinite Mode, the Runner as well as the Duplicator can earn it with luck.
If you are using the Child, start on Box Storage Area, part 10, and at the start of the level transition between parts 10 and 11, jump (or you can jump from one of the boxes). You will notice that the level keeps getting bigger at about the same rate as the Child is falling, meaning he can keep aloft until the level stops getting bigger. Just be sure to land somewhere, or the achievement won't count. Alternatively, at the beginning of Box Storage Area part 11, fall into the gap between the two boxes in front of the Child at the beginning of the level and move left or right to catch onto the side of either of the boxes. The Child will be standing on a box halfway up the wall of the tunnel, and then it is a simple matter of floating down onto a surface, as the height will be sufficient enough to keep the Child airborne for ten seconds.
If you are using the Gentleman, try to enable your electromagnet when you're underneath a power cell, and use the power cells as a "bridge" to stay aloft for 10 seconds. A tip is that when you are going towards a power cell, you can release the electromagnet, then engage it again when you are below the power cell to get a lot of height out of nowhere. This takes practice to pull off consistently but is actually very easy with some practice.
If you are the Student, do the same as the Child, but when you are about to hit the ground, hold jump, and you should float to the other side of the level. You can only do this starting on Box Storage Area, part 11, by falling onto the side of a box. Doing the trick at the end of Box Storage Area, part 10 will not work.
You can also spam the jump button with the Duplicator, and hope that you get lucky and stay up for a sufficient amount of time. You need to spam at very high speeds(about 13-15 cps) in order to ensure you don't miss a jump.
You can get it with the Bunny if you are lucky enough. The Bunny earns this achievement by bouncing fast. Don't jump too much and you might earn the achievement.
It is possible to earn this achievement with the Runner in Box Storage Area part 11 by utilizing a glitch in which you go change gravity in one of the boxes at the beginning of the level, jump as high as you can, land in a gap formed by more boxes, and "float" outside of the level. Once you are outside, you will see a hole located behind the series of boxes. Normally, this hole (four of them can be found) will be located at the "bottom" of the level. You then direct the Runner to the hole, hitting the side of the thin platform surrounding it, causing the Runner to spin uncontrollably, getting the achievement. Getting this achievement through this way is not 100% guaranteed (thus not recommended) and has only been proven to work so far on the Beta version of Run 3, (e.g. Player03's Website), as there are slightly different physics and more bugs in that version.
Walkthrough[]
Run 3 - Wind Sailor Achievement