En Masse Entertainment has revealed new details about some of TERA's biggest and meanest monsters aptly abbreviated as BAM (Big Ass Monsters), a name which I for some reason feel was inspired by the name of Reb Brown's commando group in the 1989 Bruno Mattei action movie, Robowar. The latest release reveals that over 600 different monsters have been added to the game and some in very large sizes with special abilities, hence the term, BAM.

If there's one thing TERA has in spades, it's BAMs – that is, Big-Ass Monsters. When we say big-ass monster, we don't just mean extra hit points. These monsters are bigger than a house, tougher than an armored car, and meaner than a dentist with a grudge. As players wear them down, these BAMS will go through different phases with unique attacks challenging players to adjust their strategy.

Additionally, achievements will also be available for various parts of the game. Completing an achievement can earn you a title like "Savior of Velika" or "Gutrend Conqueror" that you can display under your name.

Source: En Masse TERA website