Expertise (double proficiency bonus on two chosen skills at 1st level, two more at 6th), Sneak Attack (deal extra 1d6 damage per two rogue levels when you have advantage or an ally is adjacent to the target), Thieves' Cant (secret mix of slang, jargon, and code rogues use to hide messages in normal conversation), Cunning Action (bonus action to Dash, Disengage, or Hide)