Mutant (achievement)

Mutant is an achievement in and requires one to fill all mutagen slots.
This will take some time to unlock, as each slot is unlocked based on your level. Once you reach level 28, the fourth (and last) slot will be unlocked and once you fill all 4 with any kind of mutagen, you'll receive the achievement.
== Tips ==
* If you still haven't reached level 28 by the end of the base game and don't have the expansions, you can carry your level over with the free DLC, New Game +.
Category:The Witcher 3 achievements