Most upgrades for weapons are simple enough, all you have to do is;
1. Get used to hacking the little boxes hidden in each level
2. Get A rankings in the mini-games that you get after you beat a certian level (they are usually eiter time, health, hacking, wave, or speed trials. They shouldnt take more than 4 minutes to complete)
3. Or finding the gun's pickup (looks exactally like what you picked up to get the gun.)
Now here comes the hard part, getting the upgrade points to upgrade your weapons.
They are usually found;
1. In hard to get to spots in the level
2. By hacking the boxes
3. Or by compleating the mini-games after the level (you get points according to your grade an what level it is. Like if you completed a level 3 mini-game with an B ranking it would show, rank E 3 upgrade points, rank D 3 upgrade points, rank C 3 upgrade points, rank B 3 upgrade points.)
By the way there might not be enough upgrade points to upgrade all of your guns
SO USE THEM SPARINGLY!
Just one other tip
To get all of the levels for your battle suit, beat the game
Added by: Xrel Nov 22nd 2007, ID#1778