The word dificultaras is the imperfect subjunctive form of dificultar in the second person singular. There are other translations for this conjugation.
See the full dificultar conjugation
¡Y tú se la dificultarás!
So, you are going to make it difficult!
Realmente apreciaría que no dificultaras las cosas ahora.
I'd really appreciate it if you didn't act difficult now.
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