Big Al's Scooter

Big Al's Scooter is an achievement in Halo Wars that is unlocked when the player beats the A.I. in under 10 minutes in a Heroic Skirmish Game.

Methods
1. Enter a 2v2 Multiplayer game with a friend on the same team. Set the other team with two AIs on Heroic or Legendary; it doesn't matter which. When the game starts, have your friend escape to the Xbox Dashboard. The game will automatically end, declaring you the winner and unlocking the achievement.

2. Enter a 1v1 deathmatch game against the AI on Heroic. The best settings here are you as Captain Cutter and the AI as Forge on the Blood Gulch map. If you have any or all of the skulls to make your units stronger, activate them at the start. Immediately build an airpad and four turrets. The other spaces you can leave empty. Once the airpad is built, build two Vultures. While waiting, start attacking the little base above you with the Warthog. When the first vulture arrives, go finish off the base; then build your own setting it up the same as your first. Produce two more vultures from your main base. Now move to the base next to the AI.

If you're on time, the base there will be empty and just seconds from being able to build a base. Claim it knowing it will likely be destroyed, and rebuilding it till it is finally done. Attack any anti air units in the area with barrage (Y button) and clear it out with the two-four vultures you've built. Also be sure to use the healing leader ability. Finally, build the remaining vultures between the first two bases. Do not hesitate or wait, and start attacking the enemy base now. Use MAC Blast on the base as soon as possible, and Barrage. This strategy should also yield you the Penny Pincher achievement, if done right.

3. Enter a 1v1 deathmatch game against the AI on Heroic. Use the Prophet of Regret and the AI as the Brute Commander or the Arbiter. Right when you can, create the Temple and the factory. Create five or six Locusts and send them and the Prophet through the teleporter. Head straight for the citadel and destroy any building the enemy is constructing. Do this right and you can get the Penny Pincher achievement.

4. Start a 1v1 Skirmish match on Chasms while playing as Sgt. Forge against any enemy. As soon as it starts, send your Warthog to attack the enemy base and create more to reinforce it. Make sure a Temple is not created, if your enemy is Covenant. Supplement your Warthogs with Grizzlies to speed up the process, and you'll have the achievement in no time. If you haven't already gained the Penny Pincher achievement, make sure you have 10 or less units when you finish the game.