A rhetorical question: if you have never played Karateka it’s worth doing it.
You can google for the
karateka.dsk.gz file and load it into the AppleWin
There is a DOS version, but, unfortunately, the gameplay was slightly changed. In the Apple’s version the opponents inside the house never approach you first. There was a trick: a little step towards and immediately step back. This was the only way to force them to attack you. Then you can low-kick them. In the DOS version they always attack first, so just low-kick.
But for the DOS version there is a magic patch allowing to speedrun the game.
Immortality KARATEKA.EXE 00003066: 48 90 00003D7E: 48 90 Steel breast KARATEKA.EXE 0000306E: 83 C6 0000306F: 3E 06 00003072: 3F 01 00003073: 7E 75 Flying kick for humans KARATEKA.EXE 00002F30: 7E 00 Flying kick for bird KARATEKA.EXE 00002E2F: 7F 00 00002E30: 01 00 00002E34: 3D 25 00002E35: 04 00 00002E44: 06 00 Kill bird by first kick KARATEKA.EXE 000031BA: 85 33 Kill humans by first kick KARATEKA.EXE 00002F3A: 85 33
Don’t miss at the end when the princess hopelessly kicks you when you approach in the stance.
P.S. Unfortunately, the sources of this spectacular game are still closed.