Somewhat refreshing but not quite terrifying

Never seen the manga it was based on, so I can't comment on that. I thought it was a reasonably fresh horror with some new ideas and twists that make it worthwhile, but the atmosphere was not menacing or scary; It was reminiscent of the Gremlins and Critters-style 'fun' horror, suitable for minors.

Uninspired and stolen

A drab and shameless collage of stuff we have seen a million times before, delivered by subpar actors doing annoying characters.

Go harder

I liked the idea of making the foul subjects of metal come alive, but unfortunately this movie offers only some lukewarm gags and horrors. And despite all the effort, there still is something unmetal about it - like they didn't dare to venture into the actual macabre subjects of some of these bands.

Another crap shark movie

When the lead is a pumped up bimbo with spot-on make-up even after two deepdives, shot in numerous preposterous shots to show her curves, a movie is pretty much lost. Add crappy acting and a poor script and it becomes hopeless. Two shark attack scenes were surprisingly ok compared to the rest of it.

Unable to cash in on the fantastic concept and visuals

This is an awesome idea and the underwater footage looks fantastic and bone chilling, and must have been tricky to film. It is almost incomprehensible that they still managed to make this NOT scary - but the banal horror story and robotic underwater conversations did the trick. A rewrite, please.