Fiery Rage

 is an active skill that can be learned by Berserkers at level 22 and can be ranked up.

can be performed with an axe by the Berserker to gain a powerful power-up at the cost of increased vulnerability. Use this skill only when you are sure you won't get hit (ie. DPSing on a BAM or boss when someone else is tanking). Therefore, it is not recommended to use this skill during PvP, as other players will recognize the Fiery Rage animation and know to target you.

The mana cost and duration of the buff is dependent on skill rank.

This skill gets effect from removed skill. When active it speeds up charging skills. It should be noted that Flurry of Blows has different duration than damage boost.

Rank table
To upgrade to the next rank, one must find a Tactics Instructor and pay a certain price of gold dependent on rank.

Glyphs
To glyph, a glyph must be obtained and learned only once. At level 60, a character has 50 glyph points available to spend on all available berserker glyphs. Most glyphs, specifically common glyphs can be purchased from a Glyph Master, while fine glyphs must be looted from enemies.

(Disclaimer: As NPC shop prices vary depending on a variety of factors, the prices below are subject to variation. Only take them as benchmarks.)