27 0 0The Joker becomes available in Villain mode, Chapter 3, episode 1. Walk up someone and press B, can be your partner too.Guide not helping? View 4 more guides for this achievement.Leave a comment
19 0 0this is probably best done in the hideout where you go into all the levels as there is an infinite supply of people to shock.
16 2 0Right when you start 3-1 on the Villian side, start using it on Harley, if you have on extra hearts it takes 6 shocks before she dies, so just shock her until she dies 5 times and the achievement is yours.