TLDR: on sale maybe, gets old 3 hours in, takes 12 to finish and it feels like it drags out too much.
The game started out fun but 3 hours in you'll probably get annoyed with the same things to always do, it doesn't really have a place to stop or do anything different, it's run and shoot all the way through and doesn't really require more than 2 brain cells once you figure out what objectives are in the game. Difficulty is just added with bullet sponge enemies that have shields that don't make sense in terms of hardened enemies and it just felt like a problematic way to add in such difficulty when really a single gun can be used entirely to the end of game.
You'll find the orb thrower gun being the best, using that all game once you find it's good then basically everything is just trying to push through to the end with no different outcome towards helping anymore, so really just rush to the end and it'll feel like you've played enough.