It's like someone read The Road and went "Oh hey, that was pretty good, I know how I can ruin it!". It's a worse Hunger Games movie than even the last Hunger Games movie was. It's the kind of film where after the opening scene, there is a 40 minute flashback sequence of pure awkward exposition. It's the kind of film that manages to avoid being "offensively bad" by by the skin of its teeth, only because it is instead "embarrassingly bad". It's the kind of film that thinks it's going to get a sequel, so it resolves nothing, but that sequel will never happen.
I terms of acting? Look, Liev Schreiber was okay, but his role is both minor and beneath him. Chloe Grace Moretz has never been worse. Even Maika Monroe who was amazing in It Follows and The Guest is absolutely awful in this. Everyone else was terrible. There are so many moments in The 5th Wave that had me shaking my head, and the acting, dialogue and plot are all equally to blame.
Oh. And the CGI fuckin' sucks.
Final rating:★ - Of no value.