First players to reach 99 in each skill:
 Attack | Lady Otter | July 3, 2015 | See rest |
 Defence | Lady Otter | July 3, 2015 | See rest |
 Strength | Lady Otter | July 3, 2015 | See rest |
 Constitution | Lady Otter | July 3, 2015 | See rest |
 Ranged | Lady Otter | July 3, 2015 | See rest |
 Prayer | Lady Otter | December 17, 2016 | See rest |
 Magic | Lady Otter | July 3, 2015 | See rest |
 Cooking | Lady Otter | July 3, 2015 | See rest |
 Woodcutting | TBD | See rest | |
 Fletching | TBD | See rest | |
 Fishing | Lady Otter | July 3, 2015 | See rest |
 Firemaking | Lady Otter | November 21, 2018 | See rest |
 Crafting | TBD | See rest | |
 Smithing | TBD | See rest | |
 Mining | Lady Otter | January 21, 2019 | See rest |
 Herblore | TBD | See rest | |
 Agility | TBD | See rest | |
 Thieving | TBD | See rest | |
 Slayer | TBD | See rest | |
 Farming | TBD | See rest | |
 Runecrafting | TBD | See rest | |
 Hunter | TBD | See rest | |
 Construction | TBD | See rest | |
 Summoning | TBD | See rest | |
 Dungeoneering | TBD | See rest | |
 Divination | TBD | See rest | |
 Invention | TBD | See rest | |
 Archaeology | TBD | See rest |
* Keep in mind that data before 2007 is missing, so some achievements may be inaccurate.