Beware of the 'Unbeatable?' Pterodactyl

Beware of the 'Unbeatable?' Pterodactyl is a quest achievement earned for completing the jousting quest chain in Mount Hyjal including Egg Wave.

Note
This achievement references, a video game from 1982, which had a level with warning text matching the achievement name, including punctuation.

The final quest, Egg Wave, also rewards you one of two companion mini-jousters: Gold Mini Jouster or Blue Mini Jouster.