I guess I must have missed something as in the description you say it takes around 10 to 30 minutes, but after around 5 minutes I had seen the "international story line", and if I load that save game again I'm just taken back to the main menu. I also found a present.
From what I've seen I can say the humour it not particularly my cup of tea. Even considering an "evil cats try to take over the world" backstory to me it's a bit far-fetched that a cat just gets into a control room for nuclear missiles and is able to lock out all personnel. I'm not saying you can't create a setting where this makes absolutely sense, but from what is presented to me in the game, I'm just not convinced. Put it some more backstory, or better yet, include a playable prologue where you have to sneak past the guards or so to actually get into the room.
Gameplay wise it becomes repetitive rather quickly, so some variety would be neat. Maybe it would help already if there wouldn't be just plain buttons that all look the same, but instead have some kind of screen where you can chose from a list of targets, but the cat can't read and sees just some (different) garbage as button labels.