Ghost Squad can deliver fast, fun, shooting. But even though it tries so hard to expand gameplay. Its very short.
The good-The three levels have many paths. You can decide how to enter a room, what path to take, which each will usually lead to a different challenge and until you beat all those challenges(which can consist of sniping soldiers or disarming bombs, or on I guess boss fights, Shooting down a chopper, getting a head shot, or taking down an armored boat) you will not have 100% on that level. So basically thats what you do. The shooting can be pretty fun sometimes. It's basically an above average arcade shooter. It can be pretty fun.
The bad-Even though they tried to expand the gameplay its still short. Yeah theres weapons and costume to unlock. Big deal. Still doesn't take that long. The sound is...okay. The dialogue really sucks. Bad. Party mode which is basically co-op also tries to spice things up but nothing big. Just a co-op mode if you ever want to play through it with your friend.
Overall Ghost Squad is your average Arcade shooter you stick quarters in to play but you can take it home. If that sounds like a good deal to you go buy it. If not, then don't.