So you have to be in certain level around 40s i dont remember, and you must clear half of the survival trial to get it.

Hi!
The Trial Breakthrough is the part of the Survival Trial. It unlocks on lvl 10 of the Trial. You have to do basically the same, but the enemy that you have to face is usually a bit harder than the regular Trial. Here you can have different rewards. You earn Practice Trial Seal which is used to open one treasure.
I hope I could help.
~Spill~

thanks .. but for what level will the trial breakthough will open ... because i saw the title to a person who is lvl 36 .. and im lvl 39 yet i havent seen it :D

It opens at level 40. You can gain 1 practice seal, for a shot at opening one of the 5 treasures.

Every 10 levels you unlock another fight to earn an extra practice seal to open another treasure. This continues up to level 80, at which point you can open every treasure in the breakthrough for that day. Gaining some rare ninja fragments and usually awakening materials.

You MUST spend your practice seals that day, you can't save them for future days. They will disappear on reset.