I Loved the Airlock, but I Was Like, Whoa?

There are like a lot of explosions in this movie, but not really any buildup to them. I feel like the whole movie is just like waiting, waiting, something really exciting. The first draft had the ship infested with aliens. So they changed at some point from being aliens to being the hell dimension or whatever. And then all of a sudden there's somebody pushing against the door and it isn't open. Like that was just another thing where that's cool. You know, we're like, it would have been slower and made it more tension stuff.