The script and editing, has problems. It really does, this is evident throughout. The best way to describe the problem is to say - if you look away from the screen for 3 seconds then you have no idea what's going on or who died (the who died then) is still reeling in my brain and I still have no idea. You'll seriously watch this not having a clue what's gone on, you'll just remember that something did happen and now something else is happening. However, there is a good movie in there, I imagine there is a 2 hour version of this where everything makes sense. And there is some great action! The deaths are the main attraction, you'll enjoy them.
My own personal gripe was Thomas Jane'seseses character being there for comedy value, personally I like the guy and think he was deserving of a more heroic role, but he made it work and was memorable so I can't complain too much.
The actual story is bland, not really much could have been done due to the franchise being as old as it is, so a lot of the writing came across very lazy and half hearted.
The humour - some was good, some felt forced, each to their own on that I guess.
Space dogs - I hate all space, vampire, monster, creature.. anything dog-like in a movie. It's very lazy and always feels generic.
Nostalgia- music, some scenes, ultimately -childhood ruined. But don't let that put you off.
On a serious note, it's 'OK'. It felt as though it could have been great with a little more TLC but it scraped by and I didn't hate it.
Ps: maybe you've read this, maybe you haven't. But I've typed out this review while sat in the toilet, doing a poo.
I'm just saying...