The 100% route uses a few glitches listed in the Key Glitches and Tricks guide, so if you have any questions regarding those, please reference that guide. If you still have questions, feel free to ask me any questions.

This category is fairly new, but is now easily do-able with the Power-Up Glitch discovery. Anybody who has ever played this game casual knows how much grinding goes into the game. Since glitches are allowed, the amount of grinding is non-existent.

Keep in mind, that there are a few rules and key changes when compared to the much shorter Any% run.

1. 100% visits all dungeons, whereas Any% visits only 9 (Roron, the 4 Dams, Gaira, Skure, Crevice, and Noah), and 7 of those don't have encounters. In 100%, there are encounters in every dungeon, and lots of them.
2. 100% gets all characters, whereas Any% adds only Rudo and Amy.
3. 100% fights all bosses, whereas Any% only fights Dark Force and Mother Brain.
4. 100% forbids the acquisition of Key Items through glitching (those are listed below), whereas Any% gets the Key Tube, the Key Cards, and the Nei Items early for a quicker run.

There are a couple similarities between the runs, however, but not many.

So why run 100% over Any%? I find that 100% showcases the game a lot better than Any%. It is also cool to have a bit more flexibility in which characters you wish to use. The game runs about 3-4x longer than Any% as well. Also, since there is no acquisition of Key items through glitching, there are less possibilities of your runs ending because of mis-counting when trying to get the right item.

So why run Any% over 100%? Nei power! Seriously, for those who played the game and wished that Nei could stick with you through the entire game, Any% is the way to go (the category for a while was even called Nei%). It is a much shorter run (under an hour now), and is much less encounter heavy.

So anyway, if you're interested in learning the 100% route, then continue reading. Otherwise, thank you for reading this far!

-BANNED ITEMS TO GLITCH OR DUPE- In a 100% run, you are forbidden to pull certain items from any slot AND are also forbidden from duplicating the following items (doing so would ruin the point of a 100% run).

Small Key Letter Dynamite Teim Recorder Key Tube Maruera Leaf Maruera Gum Red Card Yellow Card Blue Card Green Card Prison Clothes Plasma Ring Prism All Nei Items including the NeiSword

-RESOURCES- There are two websites I use (and actually made in my younger days) to get all the information I need.

http://shrines.rpgclassics.com/genesis/ps2/ https://www.gamefaqs.com/genesis/526675-phantasy-star-ii/faqs/33443

The RPGClassics shrine has a good listing of maps that are great when you're first learning this run. It also contains information on every enemy and item in the game. There is also a walkthrough with pictures to help you find your way, though keep in mind that the walkthrough was developed for casual play (though it is handy for getting through Ikuto). The Gamefaqs guide provides similar information all on one file, though no maps are given. For a 100% run, generally maps are all that is really needed as you don't need item information for item glitching, but you're free to customize your run as you see fit.

Also, make sure you go here for information regarding how to execute the glitches, as explanations won't be given in this guide.

http://www.speedrun.com/psii/guide/r4tjj

-THE ROUTE-

1. When naming Rolf, name him whatever you want, but for safety sake, make sure you put at least 1 S in his name.
2. Once you have control, dump Rolf's inventory, go to the Storage Room, and activate the Inventory Glitch by going to Slot 56 (which will store a Moon Dew).
3. Use the Inventory Glitch and pull out the Crystal Chest from Rolf's Slot 21, 22, 23, or 24 (whichever you have the letter S in). Give this to Nei.
4. Buy Nei 2 Steel Bars and equip them
5. Sell Rolf's Slot 17 (which is a Laconian Helmet, sells for 14500 meseta.
6. Buy 2 Telepipes and 4 Escapipes for Nei.
7. Using the Power-Up glitch, start buying Antidotes for Rolf. General rule of thumb is once the name is completely covered by black squares, buy 29 more Antidotes to get a complete Power-Up of the next character, though sometimes this can be different. If you find out you bought fewer than needed to at least Power Up the Defense, buy a more until you do. If you buy too many and it shows that you have Antidotes equipped into your weapon slots, re-equip any weapons. Trust me, you don't want to be fighting with Antidotes.
8. Using the Equipment Glitch, equip the Crystal Chest onto Rolf. 9: IMPORTANT! Re-order your party so that Nei is in front.
9. Go to Arima and walk out.
10. At this point in the game, having Nei use the Crystal Chest will be the fastest way to get through battles. There are some battles you can run from, and some you can't (Double Froggy). Use your best judgment when attempting to run (the more enemies there are and the longer their attack animation, the more likely that it will be quicker/safer to just fight it out).
11. Go to Shure and collect the Small Key and Letter. Escapipe out (3 left).
12. Re-enter Shure and collect both Dynamites. Escapipe out (2 left).
13. Go to Nido and get Teim. Escapipe out (1 left). Telepipe (1 left).
14. Go to the North Bridge and go through the cutscene.
15. Go to Oputa. Buy Nei a Ceramic Bar (equip) and a Ceramic Knife.
16. IMPORTANT: Make sure you get the MUSIK technique for ROLF. If he is dead, revive him. 17a. (Optional but can save time in the long run. Go back to Paseo and get Rudo & Amy, refer to steps 20 and 22 for this (though disregard Hugh for now).
17. Go to the Biosystems Lab. Get the Dynamite and then the Recorder. Escapipe (0 Left) and Telepipe (0 Left). At this point in the game, use your best judgment whether you want Nei to use the Crystal Cape or attack. It may take 2-3 rounds with the Crystal Cape compared to 1-2 with normal attacks.
18. If Rolf is dead, revive him. Go to the Central Tower and go through the cutscenes to get the Key Tube.
19. Return Home and recruit Rudo, Amy, and Hugh. NOTE: Though you can use ANY character you wish in 100%, it is recommended right now to use Amy, Anna, and Shir. This will allow you to have the most inventory space and Anna will have the easiest time killing mobs with her slashers. If you wish to use any of the other characters, you may have to use Equipment Glitching more often in order to make them useful. Regardless, you should have 3 characters by the time you enter the Dams who can deal damage (Rolf doesn't count). For the sake of this guide, we will be using Amy, Anna, and Shir. If you wish to use Rudo, you have to glitch Nei's inventory. Glitch Amy for Hugh's and glitch Anna for Kain if you so wish.
20. Add Rudo and Hugh to the party.
21. Activate the Inventory Glitch on Rudo and Hugh (Slot 17 for both). OPTIONAL: Instead of using Slot 17 for Rudo, if you wish to try Hidapipes, you can pull from Rudo's Slot 50 to store one. Just pick it up afterwards.
22. Buy Nei 2 Escapipes and 1 Telepipe.
23. Buy Rudo and Hugh Antidotes until you've reached 29 Antidotes after their names disappear. (This can be easier if you re-order them so that Rudo and Hugh are first in line).
24. Return home and pick up Amy (make sure that Nei and Amy are in front).
25. Equip Amy with a Ceramic Knife (leave her Scalpel equipped).
26. Teleport to Oputa and go to the West Bridge.
27. Use the Key Tube to open the door.
28. Go to Zema and exit.
29. Go to Roron. Talk to the Motavian who gives you the Jet Scooter. Escapipe out (1 Left).
30. Board the Jet Scooter. Go to Piata and exit (the reason this is done now is because the encounter rate is a bit lower during this time of the game. It is worse after Neifirst is defeated. However, you can skip this step until you need to go to the Control Tower, but you will have to Teleport to Kueri, sail west, and walk. A Hidapipe may help at that point).
31. Go to Uzo and get the Maruera Leaf. Escapipe out (0 left).
32. Sail East and go to Kueri. Buy a Laser Slasher for Amy (to give to Anna in a bit).
33. Trade the Maruera Leaf for Maruera Gum. Exit town and Telepipe (0 left).
34. Return home to pick up Anna. Add her and Amy to the party (make sure Anna, Nei, and Amy are in front).
35. Give the Laser Slasher to Anna and duplicate it. Equip both.
36. Go to Climatrol (hopefully, Anna will have first attack in every battle, so she should be able for the most part to wreck anything).
37. Before talking to NeiFirst, equip Nei with 2 Ceramic Bars (you can either duplicate them or use the Equipment glitch).
38. Fight and defeat NeiFirst. Nei should have no trouble doing this. After the cutscene plays out, Rolf will be revived if he is dead.
39. Pick up the Moon Dew from the Storage Room and give it to Amy.
40. Buy a Telepipe and Escapipe.
41. Teleport to Piata and go to the Control Tower.
42. Go to the Piano and use the MUSIK technique (if Rolf is dead, Duplicate the Moon Dew and revive him). Grab the 4 Key Cards. Escapipe out (0 left), Exit Town, and Telepipe (0 left).
43. Recruit Kain and Shir. Add Kain to the party.
44. Activate the Inventory Glitch on Kain (Slot 17).
45. Use the Power-Up Glitch by buying Kain Antidotes until you buy 29 after his name disappears.
46. Return home and pick up Amy, Anna, and Shir (the last time you will need to return home). Put Amy, Anna, and Shir in front. Duplicate the Ceramic Knife and equip it onto Shir (she should have a Dagger and Ceramic Knife).
47. Buy 4 Telepipes and 9 Escapipes. (If Shir runs away, go back home to get her. Bonus points if she gets a Hidapipe).
48. Go to the Green Dam. Use the Green Card to open the door and the console. Escapipe out (8 left).
49. Go to the Yellow Dam. Use the Yellow Card to open the door and the console. Escapipe out (7 left).
50. Go to the Blue Dam. Use the Blue Card to open the door and the console. Escapipe out (6 left).
51. Go to the Red Dam. Use the Red Card to open the door.
52. <deleted step, as FireSlasher and FireStaff are no longer needed)
53. Open the console to activate the Army Eyes. Switch everybody to defense and fight. This is quicker than trying to run, plus it reduces the chances of a successful run to 0% (whereas before it was still a slight possibility).
54. Go to the console at the end (you can interact with it from the upper part). You can only run from fights.
55. Make sure your order is still with Rolf at the end of the line.
56. Fly to Dezo.
57. Go through Skure and make your way to Crevice and the Esper Mansion.
58. If Rolf is dead, revive him. Wake up Lutz.
59. Grab the Prism and exit the Esper Mansion. NOTE: Naval, Guaron, and Ikuto can be done in any order and shouldn't make any difference in time. Menobe is done last because it is right on the path to Crevice.
60. Use a Telepipe (3 left). This will return you to Skure.
61. Go to Naval. Grab the Nei Shield and Nei Emel. Escapipe out (5 left). Telepipe (2 left) to Skure.
62. Go to Guaron. Grab the Nei Cape and Nei Armor. Escapipe out (4 left). Telepipe to Skure (1 left).
63. Go to Ikuto. Grab the Nei Shot and Escapipe out (3 left).
64. Re-enter Ikuto. Grab the Nei Slasher (no need to equip) and Escapipe out (2 left). Telepipe to Skure (0 left).
65. Go to Menobe. Grab the Nei Crown and Escapipe out (1 left).
66. Re-enter Menobe. Grab the Neimet and Escapipe out (0 left).
67. Return to the Esper Mansion. Talk to Lutz and grab the Nei Sword. (there's an audio glitch here. Pausing the game a time or two then talking to Lutz after you get the Nei Sword will fix it, though will cost a few seconds time).
68. Talk to Lutz to go to Noah.
69. Before opening the chest with Dark Force, revive Rolf if needed and use the Equipment Glitch to give him the Nei Sword.
70. Fight Dark Force. This fight shouldn't last too long, 3-4 rounds, maybe more if you get unlucky with the curses. Having Rolf alive gives Dark Force an extra target for his curses, allowing your 3 damage dealers to deal more damage. If Rolf has the Nei Sword, he may still get an attack in, dealing over 100 damage per attack. You shouldn't have to worry about everybody getting Major curses, but if that happens, you should be able to just tank the damage until a random Nei Sword proc. All things considered this fight is quite safe compared to the old route or playing casually or glitchless.
71. Fight Mother Brain (options Yes then No to start the fight). Press C to win. Don't worry if Rolf dies. Should take 3-5 rounds if everybody hits.
72. Talk to the Earthlings. Time stops when the final cutscenes begin.

There are still improvements that can be done with the route. If anybody wishes to add to the guide, please let me know.