Lethal Strike

 is an active skill that that can be learned by Berserkers at level 36 and can be ranked up at later levels.

As of Awakening patch this skill has been totally changed. Originally it was charge skill, that cost health instead of mana. Also its damage depended on berserker's own health and it dealt more damage the lower the health was.

After Awakening this skill needs no charge and always does full damage. It also cancels some other skills' animations. Therefore it becomes a high priority in your rotation. After apex quest is finished berserker also gets superior glyph which gives this skill 2&times; crit chance.

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.)