Vidmaster Challenge: Endure

Vidmaster Achievement: Endure is an achievement in Halo 3: ODST and one of the Vidmaster Challenges. It is unlocked when you play on Firefight, on any mission, and pass the 4th set (the 12th round and 60th wave) on 4 player Heroic co-op Live. It is worth 25 Gamerpoints.

Strategies and Tips

 * Almost every round works the same; the first wave will be Grunts and Jackals, the second one will also be grunts and jackals and some Brutes, the third wave will either be drones or hunters plus some brutes. The fourth wave will consist out of many Brutes and some Grunts, and the last wave will consist out of 2 or 3 Chieftains with Fuel rods and 2 or 3 Chieftains with Gravity Hammers and many brutes.
 * Certainly the best map to do this is Alpha Site. Have your two persons defend each stairs, and hold your position.
 * When facing brutes, try to use an overcharged plasma pistol hit and then headshot the brute with the Magnum.
 * Try to let the first hit on an Chieftain be an overcharged plasma pistol shot; it will cause it's shields to fall. This is due to the fact that it will turn on invicibility after it's hit.
 * Try to distract an Chieftain and make it follow you, whilst another player assassinates him.

Warnings

 * Be very careful when invisible Brutes are coming, and the Catch skull is on. They'll throw high amounts of flame grenade on you.
 * At the last wave, be careful when facing Chieftains.
 * When an Chieftain is glowing, it's invincible; you can't hit it until it's run out.