Chameleon

You spent time studying others and learned to pick up on their skills and talents. Learning to copy them and use their skills as your own. Many infiltrators and hitmen end up falling into this archetype, but so do rogues who are unable to find a true identity for themselves. Rogues of this archetype steal and trade abilities with their enemies and allies in order to use them for themselves and sabotaging others.

Trait Exchange

Starting at 3rd level, Upon landing a sneak attack or touching a willing creature, you can force your target to make a (8 + your CHA modifier + your proficiency modifier) CHA save, upon failing you swap one ability score, action or bonus action not related to a specific weapon, trait, or an amount of proficiencies equal to your proficiency modifier of your choice. with the creature you hit or touched. This effect lasts for one minute. You can activate this an equal amount of times to your proficiency modifier.

Eidetic Memory

When you choose this archetype at 3rd level, you gain the ability to accurately recall anything you have seen or heard within your lifetime.

True Impersonation

Starting at 9th level, once per long rest you gain the ability to cast the spell Disguise Self as a bonus action.

You have an advantage on Charisma (Deception) and Charisma (Performance) checks when trying to pass yourself off as a different person.

You can mimic the speech of another person or the sounds made by other creatures. You must have heard the person speaking, or heard the creature make the sound, for at least 1 minute. A successful Wisdom (Insight) check contested by your Charisma (Deception) check allows a listener to determine that the effect is faked.

Tactical Mimicry

By 13th level, you can use the bonus action granted by your Cunning Action to make a contested Dexterity (Sleight of Hand) check, to disarm a target, gaining the ability to use their weapon the same way they can, granting you their attack modifier, multiattack (if applicable) and any traits they have that can effect their attacks with said weapon.

Master of Many Faces

When you reach 17th level, after a short rest, you gain the capstone (level 17) ability of any rogue archetype of your choice. You do not gain any other abilities from the chosen archetype.