Super Attack skills are obtained from four sources.
1. Starting skill sets.
Upon creating your character, you can instantly obtain different Super Attack skills depending on your choice of skill sets (melee-biased, ki-biased, or balanced).
2. Parallel Quests.
By chance, a skill can be dropped during a Parallel Quest or upon defeating a specific enemy in a Parallel Quest (including WARNING events).
Remember that you must clear the Parallel Quests to earn these drops.
When looking in the Parallel Quests menu, you can check the details of each Parallel Quest for which skill you have or have not obtained.
3. Masters.
Each master rewards you with Super Attack skills when you complete their first (few) training exercises.
4. Wishes from the Dragon.
After getting the seven Dragon Balls and calling upon Shenron at the pedestal in Toki Toki City, you can wish for three Super Attack skills each.
You can make up to two wishes for a total of six Super Attack skills.
Note: Any add-on content, either downloadable or as a pre-order bonus, is not needed to earn this achievement.