Nausea causes the player's vision to warp and wobble, with the distortion ramping up and down at the start and end of the effect. Although Nausea can be given in the normal range of levels, the level has no impact; it does not affect the distortion.
Nausea is affected by the "Distortion Effects" option under video settings or accessibility settings. As the distortion effects values is lowered, the nausea effect is increasingly replaced by a green screen effect around the edges of the screen. At lower values the warp and wobble effect is lesser and the green overlay effect is greater, and vice versa. At 100%, the green overlay is entirely disabled, and at "Off" (0%), the distortion is entirely disabled.
The green effect when the 'Distortion Effects' option is set to 'OFF'.
The source of the effects is irrelevant for the purposes of this advancement. Other status effects may be applied to the player, but are ignored for this advancement.
This is a hidden advancement, meaning that it can be viewed by the player only after completing it, regardless of if its child advancement(s), if any, have been completed.