This is a bad game. I have bought and played all Ratchet and Clank games.. and all were fun, just fun. I could spend hours just upgrading random weapons and exploring the vast worlds.
This game offers none of that. completely linear, upgrading is a third order condition, I hate it. If you start up a single player game, it takes you way back to major check points, and you have to listen to all the cut scenes, NO EXCEPTIONS.