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
Infiltrate STAI Battleship: Defeat massive MT
Get a lightweight Bipedal Humanoid Core equipped with the Karasawa MKII (or other high powered weapon) and the small Grenade Launcher. Find a good place that you can lie and wait. As the MT approaches from behind, face the opposite direction so you will not get hit by the cannon blasts. When it passes over, aim for the big middle part of the MT and fire away at it. It resembles a human torso.
Protect The Train: Hidden AC part
Play the "Protect The Train" mission. When the train arrives, destroy the second to last train car to reveal a hidden AC part. This results in an automatic mission failure, but you get to keep the part. It is a Back Booster extension part that speeds up backwards boosting.
Rescue Research Team: Hidden AC part
Go approximately halfway through the corridor with the floating platform. Repeatedly shoot the different colored disk at that location. Fall all the way down the opening that appears to find the LS-Moonlight, the most powerful laserblade in the game.
Safeguard Secret Information: Hidden AC part
Equip a head with a hacking of at least four. Turn left in the room before the elevator, then open the doors. Shoot the crates in the center to uncover a panel in the floor. Shoot the panel to find a hidden missile launcher AC part.
Stop The Surface Weapon: Hidden AC part
A mission that may pose a problem to some is the destruction of the Surface Weapon. There is a hidden weapon that can be a great addition to your Core as well. The weapon is the Karsawa MK II, and it is found directly over the Surface Weapon near some rocks. To battle the surface weapon effectively, but still have time to get the weapon, make sure you have at least 9000+ AP. This is not a definite requirement if your Core is fast and agile. Next, equip the Grenade Rifle (a right arm weapon), and a Grenade Launcher as a back unit. This may cause your Core to be overweight. An additional back unit may be the Chain Gun (not the Double Barrel Gatlin Gun.) With this type of configuration, select the mission and begin. First, destroy its right side weapons. Note that there are two massive guns toward its front. Do not skip them. With the right side of the first destroyed, destroy the second weapon's right side. You should now have at least 20 rounds total between both grenade weapons. Quickly fly over both weapons and back a ways to some rocks. Retrieve the weapon on the ground. Turn around and quickly boost back (overboost if desired) to the weapon(s) and finish off the remaining sides. This may require some practice.
Training room: Hidden AC part
Repeatedly shoot the circle in the ceiling until it breaks. Enter the hidden area and follow the shaft to find a part for your radar.
Underground Railway: Hidden AC parts
Follow the right-side branch of the tunnel to the end. Destroy the panel at that location. There is another panel in the ceiling above. Shoot the ceiling panel to find a hidden AC part, which is the best shield available.