First of all it is very predictable. Although I do wish they would have gone into more details about the rules of who could be sent to the future. You take one look at the drafted civilians to send forward and you know why the death rate is 70-80%. Why even bother drafting them because they are clearly going to die in 5 minutes?
Lots of death and fighting happens so Chris Pratt can look like a hero.
Then Chris Pratt meets his daughter in the future and she's the great scientist that is going to figure out how to save the world. They kidnap the queen alien and of course, the aliens attack the last stronghold where their time travel device is kept along with the kidnapped queen. Why is the research on the aliens in the same place as the time travel device? They know the males live to serve the queen. They are going to come rescue her. Why, why, why bring her to the time travel device?
Then they waste several minutes of her creating a poison in the very last minute and fighting their way to the time travel device. Chris Pratt isn't even carrying the poison even though he is supposed to be the one who is going to bring it back in time and prevent the war from ever happening in the first place. Then they waste several minutes of him trying to save his daughter and having a death scene passing over the poison when all he has to do is GO BACK IN TIME instead of pissing around.

Humans already lost at this point. The last military stronghold has just been breached. The world ended. The second he goes back in time and stops the war from ever beginning his daughter never dies horribly by alien. We don't need that scene at all.
Of course they dumbass their way through preventing the war too. The human race and the current world leaders have gone to such an extreme of drafting pathetic everyday civilians as soldiers who are going to die horribly without being any use at all in the future war. Yet he comes back claiming to have a poison and knowledge of where to find the aliens before they emerge. Suddenly no one wants to take ridiculous measures to stop the war before it begins. It's apparently fine to send worthless drafted civilian soldiers through time but not send a well equipped and trained team to Russia.

The heroes have to band together on their own little save the world expedition without government help.
They find the ship and find one tiny little room with 8-10 aliens in it. They poison a few and stand back watching them screech horribly in death throes which wakes up the other aliens who start screeching for their millions of little friends stacked Matrix style in a much bigger room. That's when they decide to set explosives around the ship and blow it up. Why couldn't they just blow up the damn ship while the aliens were sleeping and not waste time with the poison or even waking them up? Of course the queen gets loose and the have to chase her ass all over an iceberg.