First players to reach 99 in each skill:


Attack   Pandasd3   September 3, 2019   See rest
Defence   Pandasd3   September 3, 2019   See rest
Strength   Pandasd3   September 3, 2019   See rest
Constitution   Pandasd3   July 5, 2019   See rest
Ranged   Pandasd3   July 14, 2019   See rest
Prayer   Pandasd3   September 9, 2019   See rest
Magic   Pandasd3   July 5, 2019   See rest
Cooking   Pandasd3   September 1, 2019   See rest
Woodcutting   Pandasd3   August 27, 2019   See rest
Fletching   Pandasd3   July 5, 2019   See rest
Fishing   Pandasd3   July 5, 2019   See rest
Firemaking   Pandasd3   July 5, 2019   See rest
Crafting   Pandasd3   September 9, 2019   See rest
Smithing   Pandasd3   August 11, 2019   See rest
Mining   Pandasd3   July 5, 2019   See rest
Herblore   Pandasd3   September 5, 2019   See rest
Agility   Pandasd3   July 5, 2019   See rest
Thieving   Pandasd3   July 5, 2019   See rest
Slayer   Pandasd3   August 19, 2019   See rest
Farming   Pandasd3   July 5, 2019   See rest
Runecrafting   Pandasd3   July 28, 2019   See rest
Hunter   Pandasd3   July 5, 2019   See rest
Construction   Pandasd3   July 5, 2019   See rest
Summoning   Pandasd3   July 28, 2019   See rest
Dungeoneering   Pandasd3   September 3, 2019   See rest
Divination   Pandasd3   August 31, 2019   See rest
Invention   Pandasd3   July 5, 2019   See rest
Archaeology   TBD   See rest


* Keep in mind that data before 2007 is missing, so some achievements may be inaccurate.