To "väcka upp" means to wake up something, not just general awakening and the "upp" can be there but it isn't needed. If you want to say "Wake up!/Awaken!" you should use the verb "Vakna!".
It should be "Vakna för helsike!". I can't put my finger on why the "för" should be there, but it's essential.
maybe because you could say "wake up for gadsake" in english and there you have the word "for" like the word "för" in the swedish sentence.