Eventually he renounced terrorism and became more of an unofficial diplomat, traveling across the world representing Palestine. In 1993, Arafat signed the Oslo Accords, which officially ended the Arab-Israeli Conflict.
Oh, wait, no they absolutely did not.
From the mid-60s to the late-80s, Fatah and its militant arms remained active across the Middle East, especially Israel and Lebanon. They plotted terrorist attacks, participated in guerrilla warfare, trained foreign militant groups and did generally not-so-peaceful stuff. Arafat soon became the international face of the Israeli-Palestinian Conflict.
Fatah's most famous attack was the Munich massacre, which if you type into Google enough times will make Mossad agents blow through your door and drag you away to "The Farm."
And it doesn't look like this at all.