Well, I got stuck on my last achievement:
シチュエーションバトルモードの全シーンをクリアする (Situation Battle Mode Cleared)
At first I thought I missed something, then I realize the achievement got glitched.
I moved my old save file on backup memory stick and started the game with a new file. I had to redo all of the Situation Battle scenarios for it to finally unlock.
FYI, I ran through all Situation Battle scenarios in one go, without touching Arcade, Multiplayer etc.
To those who got struck by this nasty glitch, here's a Siutation Battle Mode guide by Al Soure
from the TA site. All credits goes to him:
Following is the list of the goals in situation battle mode. Without knowing these goals, beating situation battle mode is virtually impossible, still they are displayed in Japanese language (as expected). Hence the need of this list.
Please note that you have to win the match to earn stars. If you lose the match, you won't get stars even if you have accomplished some goals during the match.
For the terms used in this list, the info page of the (unreleased) North American version PB Original will serve as a good reference (http://phantombreaker.7sixty.com/info/).
The number of stars you need to unlock a particular scene is displayed at the bottom line. Although the text is in Japanese, I suppose the number is quite clear. For the unlocked scenes, the bottom line shows the basic / advanced goals for the scene.
As you can see from the list, the advanced goal is just an extension of the basic goal. So once you get used to the goal conditions, it's often more useful to aim for the advanced goal on your first try. This is especially true when the advanced goal calls for defeating your opponent with a stated type of attack.
It's a shame that some of the advanced goals are left as unknown. This means that I couldn't even beat the basic goal there
And here are some additional notes.
Emergency mode: in Phantom Breaker Extra, emergency modes activates by pressing SP while the left stick is neutral (and not pressing direction buttons). This is different from PB Original, where it activates by L + M. Also note that there are other prior conditions to activate emergency mode. See references for PB Original about them.
Slip shift: the nullify attack of quick style.
Protection: the nullify attack of hard style.
Counter burst: a powerful counterattack which depletes burst gauges. To activate, press SP while the left stick is neutral (and not pressing direction buttons).
Phantom Break: the most powerful attack of the character. Press H + SP while having 200% burst gauges. Extra style characters can't use this attack.
Aerial recovery: while you are knocked back by an opponent's attack, you can restore your balance in the air by pressing SP button at a specific timing.
Battle rounds: situation battle is fought in one round match, regardless of the optional settings.
Difficulty: you can change the difficulty of the AI opponents in the optional settings.
Multiple sequences: if a goal says "A, then B for 2 times" or "A (cancel) B for 2 times", this means to perform the sequence twice (A - B, A - B). It's not for repeating B twice after A (not A - B - B).
Basic: successfully land dash attacks for 4 or more times.
Advanced: successfully land dash attacks for 4 or more times and finish your opponent off with the dash attack.
Basic: successfully land heavy specials for 2 or more times.
Advanced: successfully land heavy specials for 2 or more times and finish your opponent off with the heavy special.
Basic: activate overdrive for 2 or more times.
Advanced: activate overdrive for 2 or more times and finish your opponent off while in overdrive.
Basic: perform slip shift for 3 or more times (only on quick style).
Advanced: perform slip shift for 6 or more times (only on quick style).
Basic: successfully land counter burst for 3 or more times.
Advanced: successfully land counter burst for 3 or more times and finish your opponent off with the counter burst.
Basic: successfully land a Phantom Break.
Advanced: finish your opponent off with a Phantom Break.
Basic: land a 15 hit combo attack.
Basic: after protection, successfully land counter attack for 2 or more times (only on hard style).
Advanced: after protection, successfully land counter attack for 3 or more times (only on hard style).
Basic: successfully land heavy specials which have cancelled light/medium specials for 2 or more times.
Advanced: successfully land heavy specials which have cancelled light/medium specials for 2 or more times and finish your opponent off with the heavy special.
Note: this means you have to unleash your heavy special by cancelling a light/medium special. I'm not very sure, but it seems to me that only the heavy special has to be successful and the preceding regular special does not need to hit the opponent.
Also, the original Japanese text can also be read as the finishing heavy special does not have to be a "canceled" one. In other words, it might be able to meet the advanced goal by landing "special (cancel) heavy special" combo twice, then finishing off the opponent by another heavy special.
Basic: land a 25 hit combo attack.
Basic: win the match with at least 60% of your HP left.
Advanced: win the match with at least 80% of your HP left.
Defeating Mikoto at this scene will unlock the "Situation battle mode: Sophia" achievement.
Vs. W. Mikoto (White Mikoto)
Advanced: defeat W. Mikoto.
There's no basic goal for this scene, just defeating W. Mikoto gives you 3 starts. Defeating W. Mikoto will unlock her as a playable character. To use her, select Mikoto as your character, then when selecting your style, input left.