World of Warcraft’s achievements system will launch with more than 500 individual achievements covering every aspect of gameplay, including world exploration, PvE, PvP, professions, and character development; from the purely whimsical to the truly epic, there will be something for everyone. Some achievements come with in-game rewards such as tabards, vanity pets, and titles. All of these rewards are purely cosmetic and just for fun, but you’ll certainly stand out when you proudly display them.
The part I like the most is the one concerning Dungeons and Raids.
Every end boss of every raid and dungeon in the game grants its own achievement. Future achievements in this category may include ones for completing a run without any player deaths, with fewer than the maximum number of players, or within a certain time limit.
I'm looking forward to building a nice track record of downed bosses! I can already say that I'm not very interested in unlocking achievements for hugging, yelling, pvp or seasonal events. Maybe professions and quests could be fun. Oh well, we'll see what it's about once it's here.