SKYLINE: a story in desperate need of an ending

As the final credits rolled on this sci-fi thriller my overwhelming sense was of having been conned out of the previous ninety minutes of my life.
The ending to SKYLINE is so utterly ludicrous that I did a mental double-take and momentarily wondered whether I’d actually been watching a heavily disguised spoof on the genre.

Up until the final few minutes this is a reasonably entertaining thriller focused on a rapidly shrinking group of twenty-somethings trapped in a penthouse apartment in Los Angeles as an invasion by murderous alien spacecraft wreaks death and destruction all around them.
What’s refreshing is the reaction of this group of tanned muscular hunks and almost alluring young ladies to the mortal threat they find themselves facing. There are no heroics or ingenious escape plans. These people are scared shitless and pretty clueless about what to do to stay alive. In other words, they have the same reaction as 99% of the viewing audience.
Their inability to figure out a way of getting out of the building without being reduced to mincemeat means the bulk of the action is restricted to the penthouse and the roof of the building. The money directors Colin and Greg Strause saved on sets they poured into special effects and it’s cash well spent. SKYLINE is a couple of hundred million dollars short of attaining blockbuster status but the fx are far from shabby. The only time the Strauses let their limited budget show are the brief shots of the oversize aliens stomping over LA. We only ever see one at a time and it’s clearly a crouching man in a monster suit trampling through a presumably miniature model of the City of Angels.
All this life or death tension building through the film has to lead to something – right? Either those left at the end will escape, giving us hope for the ultimate survival of mankind in the face of overwhelming odds, or they’ll go down fighting or at least while trying - heroically – to escape. There has to be a logical conclusion of some sort, doesn’t there?
Well no, apparently there doesn’t.
In the world of Colin and Greg Strause it’s perfectly acceptable to abandon the air of plausibility which has pervaded the entire story (plausible within the context of alien spaceships attacking Earth, that is) and offer up a conclusion which is so ridiculous and unbelievable that it must have been plucked from some parallel universe where the prosaic and the fantastic nestle comfortably cheek by jowl.
Either that or they simply ran out of ideas on how to end the story. Either way it's a bizarre way to go about making a movie.