Go to the Chronicler in any main city and let him update it (quests, PvP kills and levels, character levels and milestones, factions and so on). Killed enemies wont be update, you will need to hunt them again. For pets you just summon them once and they will be updated in your achievements window, same goes for mounts.
The Chroniclers in Khemi is near the guy that takes you to Khitai, the Chronicler in Tarantia is near the barracks where you can change items for renown (and the PvP zone travel guy) and in Conarch he is standing near the big hut if you walk over the bridge near the three traders and the tavern. They are marked on the map as a green dot.