This game and its presentation in its entirely feels broken up and watered down. The best part of the game are the Arwing sequences but that's not even saying much, since the gameplay in the Nintendo 64 Star Fox was considerably better and had tighter controls. Plus, this game frequently has "all-range mode" stages in which you fight slow moving bosses, which forces you to keep U-turning and braking to get hits on the enemy.
The stages in which you play as Fox McCloud on foot are truly insulting. The worst aspect of this is that you control the game as if it was a dual stick first-person shooter. The game could have used auto-aim assist like Shadow the Hedgehog, or a lock-on button button like Metroid Prime and many other games. Instead, you have to control Fox McCloud with both joysticks -- one for movement, and the other for turning/aiming in all directions.
But if you somehow aren't convinced that controlling Fox McCould with two joysticks is degenerate as it is, then you'd better sit down for this: The tiny C-stick is on the right side of the Gamecube controller is what you'll be aiming with. The joystick on the LEFT is for movement. Any gamer should be able to notice the problem of aiming with a tiny stump on the right side of the controller. Nongamers will find out very quickly.
There is no option to swap sticks and the two other control schemes are handicapped - they offer no way to sidestep.
The stages that take place with Fox McCloud on foot are small, arena-like stages, that are simple enough to be able to draw on a piece of paper. On these basic, geometric areas and room, aliens are scattered about, and then you are thrown in with a gun and a horrid control scheme. That's Star Fox Assault in a nutshell. It's like the gameplay is entirely inadvertant.
The game tries to excuse its crappiness by selling itself as a multiplayer game, but the multiplayer is frantic and weightless, and is also ruined by the idiotic controls.