Batman: Arkham Origins (iOS/Android): How to beat every assassin

WP – "Batman: Arkham Asylum is absolutely LOADED with supervillains, or "assassins" as they are called in the game. There's Deathstroke, Electrocutioner, Bane, Deadshot, and the newly female version of Copperhead, among others. These are usually the toughest of the enemies to beat, but they are the ones that give you the most rewards, and fighting assassins is the only way to earn free Waynetech points."