I need something with "bad luck".

"Pinnacle of misfortune". - will not do.

context: a guy is having bad luck the whole year - and his last hope was just gone.

"one stroke of bad luck too many"

We are f...ed up, basically.

interesting note on the "unluck": http://www.urbandictionary.com/define.php?term=Unluck

Контекст и ситуация видны только вам. Если это восклицание героя, то это одно, если словосочетание в повествовании, то, соответственно, вариантов масса.

Oh my miserable luck.
Oh! My cursed luck! http://www.one-act-plays.com/comedies/forbidden_fruit.html
Now, that's extremely bad luck! [This tops it all!]

Just my luck!

I think: Oh! My cursed luck! ad this tops it all - is very close. Thank you Baxter ;)

2 Lonely Knight: :)))) Yupp:)) basically yes:)) it's a hard one:))

2nephew: :))) that's a bit Jewish isn't it:))) not well-known enough:)))

Thank you!!!