Well I'm a little late to this party but let's explain why its a piece of fucking shit. It breaks the series convention aggressively, which in turn cheapens the rest of an up to that point pretty damn good series. By being a weird overacted dark comedy. It lacks the tension, and contrasted visual design of the prior films. The visual design is a big issue, filled with soft red lightning and a complete lack of sharpness. The aliens are no longer something in the shadows that we fear coming out and eating our asshole, instead they are just there and pop up whenever without a bit of thrill. The set design and shot composition is not menacing ever. The whole visual design is just a mess from start to finish from the cheap visual effects, the silly makeup costumes, to the goofy alien designs, its just B-Movie trash at best. The next issue is the massive critical mass of camp, with over the shoulder basketball shots, silly over the top death scenes, corny dialogue, and an endless wave of silly melodrama. Ripply is so melodramatic its reaches a point of complete disconnect, and her crew of rag tag characters rise to the melodrama occasion as well which makes not a single character the viewer can relate to. The plot is a mess, and rife with ludicrous holes, characters act nonsensically, the script is a mess as well, so forth, and so on. Literally there is nothing good about this film, you can say, "well if viewed as a dark comedy space thing on its own, its not bad." But its a terrible dark comedy space film with literally nothing redeeming, top it off with the fact that it cheapened an up to that point pretty solid series only makes it all the worse.
Its boring, not funny, painful to watch, and a fucking disgrace considering it came from the guy who made City of the Lost Children and Delicatessen.