The aim of this hack is to reduce the unfair difficulty found in TMNT. It’s recommended to combine it with the ‘Return to New York’ hack by guitarpalooz, it’s confirmed working with v1.81.

Changes:

• Picking up pizza now gives its health restoration to all non-captured Turtles. It isn’t divided among them, so you gain more benefit the more injured Turtles you have; this encourages you to switch and spread the damage around.
• All knockback from enemies is eliminated; no more getting knocked off of ledges/ladders.
• Hitting your head on the ceiling when jumping no longer halts horizontal movement. As a side effect, this also makes it easier to get up ledges. (See readme for details.)
• Level 2’s timer was extended slightly (from 2:20 to 2:35)
• The corridor prior to the final boss had half of its (tough) enemies removed, making it far more reasonable to get through.