Rockman No Constancy is a complete ROM hack of Rockman 2.

Modifications include completely new soundtrack, new graphics, altered bosses/weapons, and completely new level layouts.

NORMAL mode can be satisfactorily cleared even without a save states.

HARD mode specifications:

Attack power/Half Defense power, or 3/4 (Damage fraction up)
Life recovery amount 10 → 8; Life recovery small amount 2 → 1
Shocked only during unbeatable time knockback after hit (110 frames to 32 frames)
Change Rockman’s body color and title color
Heatman’s weapon has improved energy efficiency to 1 d