This hack makes the whole game completable on easy difficulty instead of just the first 3 levels.
Interestingly the later levels have different enemy placements on easy despite not being normally accessible.
Database match: Ninja Cop (Europe)
Database: No-Intro: Game Boy Advance (v. 20210227-023848)
File/ROM SHA-1: 0CFE2BCBF256299060BC4EAC51C4DAD8CED9939D
File/ROM CRC32: C14295B1