I gave the first Iron sky a 8/10. For a crazy plot it somehow all worked really well, good humor. Some likable characters. And it felt cohesive.
The sequel on the other hand feels like a bit of a mess. You can see the potential for a better film and it's pretty frustrating. The VFX for a 20 mil budget is pretty good. But the plot is just ridiculous and not in a good way like its predecessor. Most of characters were not funny and badly written. It doesn't make sense in really badly written ways that i feel could've been easily changed to make it a bit better than it was and not so by the numbers with plot holes that take you away from immersion in the wacky world they're trying to represent. Personally if i wrote this film, I would've taken it in a entirely different direction.
All the pop culture references mostly didn't work as intended, instead of being funny it was just cringey.
And the ending was just dumb and rushed.
But I didn't hate the film, I was mildly entertained, enjoyed the visuals/world they created and because i liked the first film quite a bit, perhaps im being a little forgiving when giving it a 5/10. I can understand why people would vote it lower tho.
A younger, high audience may get more enjoyment out of this. I'm getting older and don't smoke bud anymore. Perhaps that made a difference in my enjoyment, I dunno.
I'd say to give it a go if you liked the first film, make your own assessment. I can imagine there will be some people who will like it. Its definitely not totally terrible.