How to break boss as archer

I have a pure dex archer. What skills can i use to enable breaking? Power shot requires too long of charging.

 

Impact and martial skills can be inputted into your combos to flinch or tumble.

 

moeba > pshot swift tag < faster
2mp, increase tumble rate if use bow

 

Which skills should I get if i use archer?

 

^_^

 

What's the stuff in the second picture?

 

Martial skill tree. ^_^

 

Thank you beary much kind sir.. I was wondering about this too.. This post enlighten me, so I liked

 

If you use BG instead of Bow, and equip Vulcan shield (+12 Crit!) as sub, then you can throw in 11sp to buy Shield Bash level 6. This will give you a 90% stun skill that only costs 1mp.

Note, be wary in random parties because as a sniper you probably aren't a tank. And when you offer stun to the party, others may expect you to tank the boss too... to their own (very prompt) downfall lol~

 

Usually i just place powershot as a combo ender. In case tumble connects i can rush in and tap by sakuchi or by knight skill (sakuchi place you at 9m with a bow and 7m with a bg and the knight skill place you 0m from target with a small chance of knockback) all in reasonable distance to see the tap circle.