EX CHALLENGE #2が始まりまして、条件は
「難易度40以上の曲で300コンボ以上」だそうです。
そこで、いろいろ試してみました。
#2が始まってからの素譜面（ランダム、Sランダム無し）LV40以上300コンボ達成曲です。
勲章狙う参考にでもどうぞ。
| 曲 | LEVEL | PART |
| BRE∀K DOWN | ADVANCED | BASS |
| 涙のregret | EXTREME | GUITAR |
| 涙のregret | EXTREME | OPEN |
| 涙のregret | ADVANCED | BASS |
| pot-pourri d'marmalade | ADVANVCED | GUITAR |
| pot-pourri d'marmalade | EXTREME | GUITAR |
| Agnus Dei | BASIC | OPEN |
| Agnus Dei | EXTREME | OPEN |
| Agnus Dei | EXTREME | BASS |
| MODEL DD5 | BASIC | BASS |
| Timepiece Phase II | BASIC | BASS |
| Timepiece Phase II | ADVANCED | BASS |
| BLIND | EXTREME | GUITAR |
| begin | ADVANCED | BASS |
| 大見解 | EXTREME | OPEN |
| RUSSIAN ROULETTE | EXTREME | GUITAR |
| アンダンテ | EXTREME | OPEN |
| 蛹 | ADVANCED | BASS |
| 人にやさしく | EXTREME | GUITAR |
| ベイサイドベイビー | EXTREME | GUITAR |
| Black Sheep | BASIC | BASS |
| Black Sheep | ADVANCED | BASS |
| GET IT ALL | ADVANCED | GUITAR |
| しかられ日和 | EXTREME | GUITAR |
| Show Business | EXTREME | GUITAR |
| O JIYA | ADVANCED | BASS |
| ファミレスボンバー | ADVANCED | GUITAR |
| わすれもの | EXTREME | GUITAR |
| COSMIC COWGIRL | EXTREME | GUITAR |