SPOILER ALERT!
Ok, so.........
First off, it's a really really bad script. A fun idea, but a really bad script. If the ending isn't predictable, then I don't know what is. Idiot people doing idiot things that somehow blossom into a terror that is completely impossible. I wish these moron 200million dollar budget films had a plot that wasn't stupid people being complete idiots doing idiotic moronic things
Second, the actors are as placid as a wet noodle. Yeah, we know, Godzilla is the protagonist, but what's with the "dude" that has no point or is somehow the hero when you know damn well he was never meant to be one? There isn't one person other than Godzilla that is entertaining, interesting or likable. Remember "Die Hard?" (many probably don't these days) ... Now that's a superhero that you root for and despite his imperfections, you like and think is doing the world a favor. Every hear of James Bond? You get the idea....this is like "battleship" .. dumb, stupid, impossible with nobody you want to survive.
Third....eating nuclear bombs?

You've got to be kidding! The "bad" monsters look like something from another world. It's completely unbelievable from the get go. They look stupid. Godzilla looks like he should look. If they are from the same "time" then they should have something in common. One looks like space aliens, the other looks like a giga dinosaur. Brilliant!
Now, "some" of the special effects are interesting, I'll grant you that. But I for one need a bit more from a movie. And the nuke thing in the end. You're telling me a remote control boat can get away from SF in time for a fantastically powerful nuke to go off and somehow SF survives IN FIVE MINUTES? Oh and all the scenes with the nukes. You can't be serious! It's not like thousands of other films where you think that maybe....just maybe our "hero's" can make it happen. It's an insult.
One final note, Japanese houses DO NOT look like that

Good job on the "doctor a ranch house and make it look like it's in Japan" nonsense!