Visually it's great.
But the roller skates just made me think I was watching some weird 70's SF - except it didn't have the balls to go full Zardoz or something.
Instead Mila Kunis just seemed to accept everything that was happening as if she was mildly stoned.
The villain's acting was the worst thing I have ever seen (and not heard because he mumbled the whole way through as if someone had stuck Jack Nicholson's Joker prosthetic face into his mouth).
The intergalactic stuff should have been really awesome, but instead the visuals were wasted; oh look it's a dragon person, a porcupine faced dude, and some woman who bathes in soylent green. It was ho hum and noone really sold any of it.
And then she goes back to cleaning the bogs, like some dutiful lottery winner!
"ee a've been t' outer space, but it's not going t' change me, I'll keep me job cleaning lavs in t' Asdas!"