I can live with the bad alien costume, CGI and make-up... after all it is a low budget movie, so that is not whats ruin this movie.
The acting was too often very bad, and for short periods ok good considering the, to me, unknown cast.
But the worst part was the stupid plot.
Aliens visiting earth to abduct people and then travels back in time and release them there for no reason at all.
The background music was boring and in some scenes it didn't even fit in.
When the characters was supposed to be in danger, the music was so off, that I never had the feeling of the intended danger.
Review of Fighting the Sky
