This hack is a joke, nothing more.
Modifications:
Original ROM: Duck_Hunt_(JUE)_[!].nes
Duck Hunt (World).nes - NOINTRO
CRC32: 4644085E
MD5: D802E9D7B8BFD586F878E0922F62BF46
SHA-1: 8E18068823635A115E2FC0925FF3BDA209EC6A42
SHA-256: CA0D31E6F3AA70204FA5AF67803C6533851A28FA48A133E15D772D3667FA675A