Bridge
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When the level first starts, turn to the left and shoot the Spinner. It take a lot of shots to destroy it, so if it leaves there's no real point in pursuing it. Get the gem where the Spinner started out at, go up the ramp and to the left. Get the first gem and take the moving platform on the left across to the other side. If you fall off, follow the arrows back up and try again. Get the gem to the left and the Shatter Ammo to the right. Shoot the yellow and black push block forward until it falls into place. Then go back over to the other side with the help of the moving platform and to the left.
It's possible to take out the Bomber with a few shots of the Shatter Ammo as you go down the ramp if you can get the shot to shatter at the right time causing all of the shots to hit it. Take the elevator to the right to get the Laser that is at the top. You won't see it unless you turn completely around. Take the elevator back down and go down the ramp to the right to get the Bounce Ammo. Continue up the last ramp and to the left over the push block you moved.
As you go down the ramps, turn to the right and strafe down the last ramp and shoot the Wakka with your Laser to destroy it with one shot.
Continue up the left ramp and across the moving platform to the Homing Missile. Fire one of the homing missiles right away to hit the Gun Turret below the moving platforms.
Shoot another one to the right near where the blue arrows are pointing to hit the Missile Turret back in the corner.
Cross the next moving platform but watch out for the
electric barrier. Get the last gem and turn to the left to hit the Floater with a Homing Missile.
Equip your Standard Ammo and go up the small ramp. Stop on the platform and turn to the right.
Shoot the push block when the elevator raises it to it's highest position to make it slide in place.
While it is sliding get behind the platform you were on and equip your Homing Missiles. The
Missile Turret will respawn before the push block gets into position, so shoot a missile at it to
destroy it again. Finally go over the push block and touch the
exit block. If you fall into the pit before the push block gets in place you have to follow the
arrows all the way back to the beginning where the Spinner started. The good news is that you
can get the Minigun.