Each build is for a specific purpose as listed in their titles.

Burst Damage Steps: (situational)
Attack -(2) Q, 1, D, Left-Click, R.
Recovery - (2) Right-Click, E.

Focus Fire: You are using your Q and 2 to call out targets for your team.
Use your R when becoming a focus fire target yourself.

Area Attack: For those moments when cowardice takes hold. Use axes to slow and damage enemies repeatedly.