"Let's hook up sometime" to me, means let's meet up and chill. But if I were to talk about a girl I "hooked up with", I would mean "fucked her till she writhed in ecstasy and squirted all over me."
To me, "Made out with" encompasses everything else. (dry humping, groping, even hands-down-the-pants or shirt)
"Handjob" is slightly above "made out with".
"Blowjob" is God.