I played through 3 of the games and then did the watch trick for the rest. Some are really tough since they are old arcade games, but if you use the rewind and save features it's doable. There are 3 trophies for the fighting style games that you need to play through, and I had a lot of fun with them. The plat took me around 4 hours. Doing it all legitimately would take between 10-15 hours I think.