In the Suicide Squad movie, what exactly are Harley Quinn's superpowers? There is a scene in which she is immersed in a liquid by The Joker but it's not clear what transformation if any occurs there. Or is she "merely" a Peak Human?
Regarding the "scene in which she is immersed in a liquid":
She [...] allowed herself to fall into the vat of chemicals that created the Joker years back. [...] Harleen awakened with the same frontotemporal dementia that her lover received via exposure to the chemicals and oxygen deprivation as the Joker broke down into maniacal laughter.
While this may or may not be true for the movie version, the comic book version of Harley Quinn has "superhuman agility, enhanced strength, intelligence" listed under her powers. (dccomics.com)