Dragon Ball Xenoverse 2 - Z Rank

I am trying to get Z rank in all quests, but I can't seem to get Z rank in the third training quest for Gotenks (the one where you fight the Cell Juniors).

I can complete the quest with:

• More than 80% HP
• Finish with Super Attack
• Kill 10 enemies with 10 Supers
• Hit 10 Supers
• Grab 3 Times
• Destroy 10 objects
• Hit 20 ki blasts
• Hit a 20 combo

And currently I can't remember no more, but even with the above I can't get Z rank. What else can I do to improve my score? Any tips for this quest?

EDIT: Tried to use the "40 tons weitgh" Z-Soul, but it seems that this only change de experience and not the score itself. My best score at this mission is around 8600... I'm pretty sure I am close to Z rank, but no luck until now...

EDIT 2: Just managed to complete the mission with 2 more bonuses:

• Hit behind 10 times
• Perfect block 3 times

Wans't enough yet: 8900 points... S Rank

Is there any list with all the accolades for this game?

EDIT 3: Complete all the above with:

• Finish in the last 10 seconds

9230 points and still S Rank... I'm starting to believe it's not possible to get Z Rank in this mission.