So when a glyph like say crushing says for 5 seconds, what does it mean, when I hit an enemy it activates for 5 seconds, after 5 seconds, if I hit again after 5 seconds does it reactivate. Is that how it work
Yes that's how it works. The glyph will activate from light and heavy attacks and skills of the weapon lines. The standard cooldown for buff/debuff glyphs is 10 sec starting at activation, for glyphs that deal dmg it's around 5 sec. Infused trait and the Torugs pact set can reduce the cooldown.
So without Torugs and an infused weapon you will have 50% crusher debuff uptime, with Torugs and infused you can get close to 100%.