One-word term for «Done with errors»
Incomplete seems like the most natural choice, but I would say imperfect gets closer to the meaning of "partially successful" than "partially complete".
"Inaccurately," "erroneously," or "erringly" could be used here.
Inaccurately:
in a way that is not correct or exact [Cambridge]
Erroneously:
in a mistaken way; incorrectly [Lexico]
Erringly:
in an erring [err: make a mistake] way [Collins]