* ScrappyMechanic: Unlike most [[ShootEmUp Shoot Em Ups]] where the quicker you defeat the boss on time, the more points you score, here, [[AlwaysClose you have to let the timer hit zero]] in [[BossBattle Boss Battles]] and quickly kill the boss.
* ThatOneAttack: The TrueFinalBoss has this one attack where it flies past you in different directions, leaving a trail of bullets in the process. This attack is very unpredictable and can be quite difficult to dodge.