Great game beat it several times.
bugs...
1. Can't get intro stage or fortress 1-3 s rank achievement to pop. A stage achivement for s rank works on same run. Is there suppost to be a score summary screen on stage complete like the normal 8 bosses.
2. Final Boss on fortress 1, can not kill you when using the crush move and you become invincible but can still damage the boss. You also fall thru the floor, but can keep jumping and wall sliding the crushers to stay on screen. Once you fall off screen you cant get back on and its soft locked. If you kill the boss it will finish the stage. already reported.
3. the dr light capsule on fortress 1 is not showing up on ng+. Beat the game without knowing it was there. yet to rerun a full fresh save.