Armored Core 2 is a mecha video game in the Armored Core series. Sixty-seven years after the events of the first game, Earth's second largest
corporation, Zio Matrix acquires plans for a research project on Mars, dating back before the Great Destruction. Using these plans, Zio sends a research team to Mars to begin the Terraforming Project which causes the Martian surface and atmosphere to approximate that of Earth. Other corporations quickly learn of the project and follow Zio, bringing with them the competitive environment that existed on Earth.
Similar to the first game, the player starts off with a basic AC and is expected to complete a trial mission which consists of destroying several MTs. Completing the mission will register the player's character with Nerves Concord, a "mediation" firm much like the Raven's Nest of the PlayStation era games. From that point on, the player is relayed missions by their Nerves Concord manager and completing these missions will advance the game's storyline.
GAMEPLAY HINTS
Zio City Suppresion: Hidden AC part
When fighting during the Zio City Suppresion mission, leave a special forces unit alive and go towards the green buildings in the urban area. The part is the Orbital Cannon. It is near the wall. Search carefully and do not get destroyed.
AC Test area: Hidden AC part
Blow up center of the ceiling and fly up there. Look around to find a hidden AC part.
Bonus AC parts
Successfully complete all of the following missions in the indicated series to unlock the corresponding part:
Move back (or not at all), then take out a weapon that will not make Castor recoil too much (Pulse Cannon recommended). He should not move, although he may fire back or use his shield. He can be destroyed in about 10 to 25 seconds.
Defeating Leos Klien
When entering this level, go to the hallway that has three doors in it. Be sure to use your thrusters "the strong ones" and blow through the mines. You will not get hurt. Check the doors in that hallway. There should be the best generator in the last one.
Build a heavyweight AC and equip it with the pursuit missile pod. You can take him down in less than thirty seconds. Point the sights straight up, or close to it. When you fire, most of the missiles will hit him. Tap Fire rapidly so they fire as fast as possible. After he is "destroyed", he will change into a white disorder unit/AC. With conventional weapons, this is next to impossible to lock on to, as he zips back and forth too quickly. However, by using the the same tactics above, Kline is easily overcome. After this mission, you can use overweight ACs.
Defeating Matthais
Unlock Matthais, choose the Battle Dome and use the Karasawa and a well armored AC. Fight by keeping him under fire until he takes to the air. Activate the Limiter Release, keep with him, and do not let up. To make it easier, have the Energy Weapon Amplifier and Accelerator.
Go to the Falna Craters level. Matthias has a tendency to get in back of you. When the battle starts, do the "Limiter release" trick and fly backwards to where you are about to leave the mission area (near the red line on the radar). Matthias will try to get in back of you, and he will step out of the mission area.
Defeating Nine Breaker
Before getting to him, he will give you a Sniper Rifle. On the way there you should have collected a lot of credits. Use this to buy the Pursuit Missile launcher. Make a Core with AP higher than 9Breaker's, with the Missile Launcher, Sniper Rifle, and Missile Interceptors. You should be able to defeat him in the crater. After that is done, you will have Stealth Units.