Played on and off casually for years, 100% solo,recently popped my dungeon cherry, things were looking up until i stumbled across players running Griffonrook run and joined in [ I wasn't prepared] :
Griffonrook Run (jumping puzzle) - Guild Wars 2 Wiki (GW2W)
GW2 - Skyscale Mount Achievement Guide - GuildJen
How to Unlock the Skyscale Mount - GW2 - MetaBattle