Back Against the Wall Achievement
Back Against the Wall30
While in Phantom form, filled up the screen with more than 800 bullets.
(Origin mode only)
*Novice mode allowed*
*Continues are allowed*
I suggest not doing it in Novice mode due to there being less bullets. You can do this on the stage 5 or stage 6 boss. Simply conserve your phantom energy and then press to enter phantom mode. Don't press any buttons as you will get hit by the enemies bullets if you try and shoot him. You won't get hit because in origin mode, instead of accumulating Katanas and Steel orbs, you can bounce bullets back and forth. This makes you invincible in phantom form. Simply bounce bullets back and forth by running into them until there are 800 bullets onscreen.