GTA 4 - One Man Army tips

[Reclaimer]

I figured we can share how we got the "One Man Army" achievement.

For instance after a bit of trial and error I discovered a fairly painless way. I drove to the airport during story mode and drove through the gate closest to the private jets. There, you'll find a single Annihilator helicopter.
At least when I played in my early story line theres one by itself.

If you drive through the tarmac, you'll get the 4 star and a ton of cops on your ass making it hard to get in the helicopter without getting shot up.
If you go through the last gate, you drive straight to the helicopter pretty quick with minimal chaos despite the instant 4 star.

Jack the Annihilator and get in the air fast. I flew straight to the next island and picked up an instant 6 star. Don't land, don't fly too high.
Just start flying at full speed around Liberty City. Stay low enough to see the cop cars or boats, but just high enough to not get dinged by gunfire.

Going fast and not taking too drastic courses keeps the police Annihilators from banging into you or shooting you down.
If you're good you can probably take care of a few bridge fly unders for that achievement. I got three back to back while in pursuit.

Just keep flying fast at mid-altitude and you'll get the achievement.
Now if I can just tie that strategy into "walk away from a 4 star or better."

[Steeps5]

I found this on cheatcc.com, i thought it would help you guys.

Go to the bridge that takes you to the second island and has train tracks under it. Walk along the train tracks towards the second island before you are allowed to cross the bridge. When you are about half way, you should have a six start wanted level. Then, just stand on the train tracks for five minutes to get the achievement. You do not have to worry about the police because they will be on the bridge above you so they cannot shoot, and the helicopters are above you so you have cover from them.

Go to the hospital at the north-west corner of Algonquin. You can also get there by dying in that general area. Get a motorbike. Set a Waypoint at the hospital or just remember the way you came. Drive to the nearby bridge that takes you to the third island. You must not have access to the third island for this trick to work. Slowly reverse backwards over the barricade on the bridge until you get a six start wanted level. Then, drive straight back to the hospital. To the right of the hospital as you are coming back is a little red fence that you can bust through and get onto the elevated train tracks. Wait there for approximately five minutes to get the achievement. No cars can get to you on the train tracks and the helicopters cannot shoot accurately enough to hit you at motorcycle speed.

Attempt to enter one of the locked boroughs early in the game to get an immediate six star wanted level by taking a car on the subway (or elevated train) tracks. This can be done easily near the corner of Grand Boulevard and Leavenworth Ave. in North Bohan near the police station. From Leavenworth, take a left onto Grand, and go up the little hill. When you reach the crest of the hill, look to your left to find a very short wall above a subway tunnel. Drive a car over that short wall, then drive underground toward North Algonquin. When you have a six star wanted level, stop your car and remain there for five minutes to get the achievement.

After the middle island is unlocked, steal a helicopter from the helitour site in the southeast corner. Fly over any other area you have not yet unlocked to automatically get a six star wanted level. Fly off the map in any direction, and stay in the air. The police helicopters will only chase you so far. After five minutes, you will get the achievement.

[addict]

After the middle island is unlocked, steal a helicopter from the helitour site in the southeast corner. Fly over any other area you have not yet unlocked to automatically get a six star wanted level. Fly off the map in any direction, and stay in the air. The police helicopters will only chase you so far. After five minutes, you will get the achievement.

thats how i got it.

[No Fear 23]

I used the cheat to raise my wanted level to 6 then use another cheat to spawn the chopper in front of me. took it airborne and flew around the city to see how the choppers will bring me down. I wasn't expecting to get an achievement for this bc I was using the cheats. But I got it.

I think they got lazy on the air chase part. They could have had the AI choppers to fire some rockets at you and use much more aggressive action like they do on the ground. They could have had an airplane coming up behind you and take you down.

[Enamelized420-XBA]

I got on the tracks near the Police station and stayed in the tunnel until I got the Achievement....