My summoner name is MoskalKoksu. I've got small lvl but I play Darius wery well and that why I do this guide. I'am from Poland so my English is so fake.

hemmorhage
Darius' basic attacks and damaging abilities cause enemies to bleed for 12 / 15 / 18 / 21 / 24 / 27 / 30 / 33 / 36 (+ 30% bonus AD) magic damage over 5 seconds. This stacks up to 5 times for a maximum of 60 / 75 / 90 / 105 / 120 / 135 / 150 / 165 / 180 (+ 150% bonus AD) magic damage over the duration.

Darius gains 5% movement speed for each bleeding enemy champion

Decimate
Active: Darius swings his axe, dealing physical damage to all nearby enemies in a circle around him.
Champions in the outer half of the ability are struck by the blade, taking 50% additional damage.

Crippling Strike
Active: Darius' next basic attack deals additional damage and slows the target's movement and attack speed for 2 seconds.
Crippling Strike's base cooldown is reduced by 1 second for each stack of Hemorrhage on the target.

Apprehend
Passive: Darius gains armor penetration.
Active: Darius pulls in all enemies in front of him.

Noxian Guillotine


Active: Darius leaps to an enemy champion and strikes a lethal blow, dealing true damage.
For each stack of Hemorrhage on the target, Noxian Guillotine deals an additional 20% damage.
When Noxian Guillotine kills the target, it can be recast within the next 12 seconds. This can occur multiple times in succession.

This skill is very good to ks :D and frag's.

Small combo (to surprise your enemy):
Flash + E
Fast combo (when enemy have low HP):
E+W+Q
The best Combo (Gank omg :D):
E+Autoattack+W+Autoattack+Q+R

The best skill to have frag's is Darius ultimate obvious! How to use it??? Watch yhis video :D

This is end of my guide. Thank's for watching and reading!
MoskalKoksu