I feel a bit mixed on this game overall. It's not a bad game by any means, however I just think there were a handful of issues I had that kept me from really enjoying it. And I think overall most of my issues came from some just, general clunk that this game had.
To start with the positives though, I love the general vibe of the game. I love weird space stuff, and this is definitely that. The characters have a silly charm, and I love the general dynamic the titular characters have. The story is quite simple, but the humor does elevate it a bit. And the general movement that Ratchet has is really nice, especially as you gain new abilities along the way.
However, there's quite a bit of clunk with both the game's platforming and combat. And honestly? The platforming isn't too clunky aside from the magnetic sections. I've had multiple times where I get forced off the magnet because it thinks I walked off of it. The combat is well, another thing. In the case of the basic melee weapon, that's perfectly fine, I don't really have too much of an issue with it. The guns though, were a pain to use, especially with how necessary they are.
One minor gripe as well is I feel the game has a noticeable lack of checkpoints? I'm not against having a small amount of checkpoints in things, but in the case of this game, there felt like there were too many long stretches of levels with no checkpoints. It got to a point where it wasn't challenging, just annoying.
I know I've mentioned a lot of issues with this game, but I don't think I hate this game. I'd say overall I did like it, but I far from love it. I do hope the sequels improve upon this game.