(You are an early solving player! This is an unthinkable speed. You are a great runner! …But please take it easy next time. There are probably many things in this world you have not seen.)
You have to finish the game within 15 hours to earn this trophy. This is near impossible on the first playthrough. Even if you play on Easy difficulty, skip all dialogues and only do the mandatory events, you will end up with a play time higher than 15 hours. To save some nerves, you should make use of the Grade Shop you unlock when you finish your first playthrough. Start an EX New Game and you have access to the Grade Shop. For the speed run, the option ????????(10x Experience) is essential. Other useful options in the Grade Shop are:
- ?????????99?(Max 99 Items)
- ??????(Carry over gald)
- ??????(Increase Max HP)
- ??????(Increase Max TP)
- ??????(Skill SP 1)
- ????????(Fell Arms Abilities)
Your play time of the previous playthrough will be inherited to your new playthrough, no matter what you buy in the Grade Shop. The 15 hours time limit will be added to this time. For example, if you have currently played 150 hours, your goal is to finish the game before reaching 165 hours. To save time during your playthrough, you should skip all cutscenes and play in easy difficulty. Use ???????(Holy Bottle; #0020) to avoid normal battles. Buy as many as you can in the beginning to make sure you do not run short of these. Furthermore, if you have inherited the skills from the Grade Shop, you can equip Repede's skill ???????(Holy Breath) to increase the duration of a Holy Bottle. Safe often, so that you can reload if you feel like you have messed up somewhere for example in a dungeon.
Following all the advice, you should be able to finish the playthrough within 10 hours. If you remember the sequence of story events well, you could even finish the game within 5 hours. If you are stuck, you can refer to the Appendix for the sequence of story events.