This requires you to get half of the equipment in the game, I don’t think the dlc stuff is required.
Super souls, accessories and clothing are the items counted as equipment.
These items can be gained via main story, grinding parallel quests or by buying them in the respective shops ( item for super souls, clothes shop and accessories shop) in addition to the tp medal shop.
You can check the % by looking in the play data screen via the pause screen. In addition zeni can be earned quickly by selling duplicate clothing or hercule badges (earned by farming time patrollers in missions). Pq’s 4, 23 and 79.
Furthermore tp medals can be farmed quickly from expert mission 16, in the realm of the gods: Vegeta giving 16 tp medals per completion.