~Unlock all slot reels~

This trophy requires you to get all overdrives for Wakka; he starts with one (Element Reels) and can earn three more through the Blitzball minigame. You can start playing the Blitzball minigame once you clear the storyline Blitzball Tournament in Luca. While you can play Blitzball that early, there's a few reasons why you should hold off on doing so. The first one is that the Reels only appear after Wakka takes part in so many battles, I believe you need to clear 450 for access to all reels. The other reason is that it's not until the end of the game do you have access to some of the best Blitzball players, which can speed this process up as you'll have to go through at least 16 games and win a majority of them.

After partaking in enough battles the first slots (Attack Reels) can appear as a 1st place reward in a Tournament. If you know you've completed enough battles and it's not there as a prize; you can exit and re-enter the Blitzball Menu to cycle the Tournament and its prizes. It'll take precisely 3 exits/re-enters to cycle a Tournament. So instead of playing through countless games, use this method to cycle the prizes and then win the Tournament for the Attack Reels.

The second slots (Status Reels) can appear as a 1st place reward in a League, after winning the Attack Reels. Much like the Tournament games, the League prizes can be cycled by choosing the Reset Data option at the bottom of the Blitzball Menu. You should also be aware that even though it cycles the prizes, your team will be reset to their default level; some characters go below level 3 which means they won't have any access to abilities (Tidus with Jecht Shot for example). However, if you manage to pick up the better players you should be able to overpower the opposing team. Keep in mind that a League consists of 10 games and 1st place is rewarded to who has the most points at the end of the league. Winning a game gives you 3 points, tying a game gives you 1 point, losing a game gives no points.

The third slots (Auroch Reels) can appear as a 1st place reward in a Tournament. Just like before with the Attack Reels you can manipulate the game into what prizes the Tournament offers. Win the Tournament for the final Reels and the trophy.

See Blitzball FAQ for details about playing.