Spy Hunter

This is a nice change from the obligatory 'fully upgrade all weapons' trophies. For this trophy, all you need to do fully upgrade four (4) separate weapons, equip them and start a mission with them equipped. When I say separate weapons, it means the 4 separate weapons in your load-out, i.e. your front, side, rear, and roof weapons. It cost about 10-15 thousand points to fully upgrade a weapon. You’ll have enough points to upgrade four weapons at about the half way point in the campaign.

I would suggest you use and upgrade the below weapons during your campaign to make things easier on yourself. Proper use of these upgraded weapons will make even the game’s toughest moments laughable. Upgrade in this order:

1. Machine Guns
2. Flamethrower
3. Swarm Missiles
4. Shocker