次元の扉から戻りし者 Achievement in DeathsmilesⅡX
How to unlock 次元の扉から戻りし者
To get to Pigeon Blood Jitterbug, you need to defeat every boss including Mad Teddy & Mad Bunny, and Satan Claws using a lock shot (hold X). This needs to be done without continuing. (needs verification as I continued to Satan Claws and still got to Pigeon Blood Jitterbug) Get the boss's health down to just a couple of ticks and then hold X to lock on and finish them off. Play all fields on level 1 and set the life/damage settings to make it easier.