Not all that impressive for a game today, but this was basically unheard of in the 1980s and it explains how the movements were so smooth.
If you’ve played it a decent amount of times, you will recognize every movement in the live action video as it looks in the game.
Also, for those who don’t know what rotoscoping is: https://en.wikipedia.org/wiki/Rotoscoping
Muybridge’s motion studies are amazing! I didn’t even make the connection, but I can see it now.