This lunatic is west of the last, at the P.C.N. Research Institute, and there is another save along the way. Find the main entrance (the east side) and the big building, but you want to go around and ascend the round buildings on the west side. When you get up here, then find the opening to the bottom level on the east side of the main center, round building. There will be a couple of guys behind some sandbags and they guard the entrance to the main building. 
Get past them and start killing foos as you ascend the levels on your way to the top. I know there are a bunch of cool new enemies in here, but th
This lunatic is west of the last, at the P.C.N. Research Institute, and there is another save along the way.
Find the main entrance (the east side) and the big building, but you want to go around and ascend the round buildings on the west side. When you get up here, then find the opening to the bottom level on the east side of the main center, round building. There will be a couple of guys behind some sandbags and they guard the entrance to the main building.
Get past them and start killing foos as you ascend the levels on your way to the top. I know there are a bunch of cool new enemies in here, but they are just eye-candy as you can ignore them; they pack a mean punch though. When the path ends, you may think that there is no where to go. But the boss is in a hard-to-see room on the west side of the top level, which is reached by taking the nearby steps. Don’t blast away, like an idiot, because there is a big glass panel in the way of the entrance. Just kick it out of the way and start blasting more foos again. Oh yeah, there is a boss to kill, too bad that is not a challenge.
You can just drop down into the pit and take the path to the streets.
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Now head back into the heart of the city. There are two bosses in the main square, and you will take the one on the west end first. Might as well get the next point along the way.
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Supply Point:
Bubble
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Simple enough, just use the ledges on either the north or south side of the building to get up there.
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Get back on the ground and enter the round skyscraper its east side; the front door.
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General 6
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Colonel Axton Cowell
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This guy is south of the last, in the big building just opposite the main one, Central Point.
Got to enter from the front this time, but just blast the first guys and knock down the doors. Ignore all the enemies and run to the back and turn on the elevator, then run inside and make it go up. When you get to the destination, you have two choices on how to go up, either: jump between the sides of the middle circle to get up, but you need good agility, or you need to run up the ramps as fast as you can. Either way you will find an opening leading to some ledges that you can climb, but do it quickly because these foos ain’t playin’ around.
Jump up to the top, with your shield up at least, and blow the traitor to oblivion. Then I say jump to the sign on the building to the southeast side of Central Point, below, so that you can reach the nearby supply point.
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One more supply point, may as well get it now.
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Supply Point:
Stripey’s Cafe
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With max agility you can reach this point easy. For everyone else listen closely. There is a building connected to the big one the last boss hid in, Central Point. Run south and keep looking up until you see a vertical sign that reads: Manority Corporation. Jump on the thing above the doors and use the balconies to go up. When you get on top you will see five marble, bent columns to the left. Get on one and get to the next surface. Look right for the Ding Dong PLC. Jump to it and the supply point is all yours. get up.
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Nothing left to do but doing the dang deed.
*Should max out your agility to make the last boss a bit easier. You might as well, so you can max out the length of the game.*
