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Staving Off the Infection achievement in Halo Wars: Definitive Edition

Staving Off the Infection

Complete Mission 9 on any difficulty.

Staving Off the Infection0
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How to unlock the Staving Off the Infection achievement

  • Shadow 00 FoxShadow 00 Fox
    02 Jan 2017 09 Jan 2017
    The Flood is fairly easy and fun! Even on Legendary, it's still pretty easy to just wipe out this map, it just takes a while.

    My strategy for Mission 9: The Flood

    The overall focus in order of importance:
    1. Build up starting base quickly
    2. Spam Scorpions
    3. Build up the 2nd base
    4. Use the Scorpions to wipe out all the flood and prevent them from respawning
    5. Kill the final Boss Flood structure

    My general walkthrough steps:
    1. Start with the usual two Supply Pads and a Reactor.
    2. Take the two Elephants on the left side of your base, unlock them, and then lock them in position at the North corner of your base, a little bit on the right side.
    3. Build some Turrets with Anti-Air.
    4. Build up your starting base, focusing on getting Scorpions.
    5. Once your starting base is going well, send your Warthog to the right corner to the other base, and start building that one up as well--make sure to get Anti-Air turrets on it quickly!
    6. Get the Scorpion/Warthog/Field Armory Upgrades.
    7. Start assaulting the Flood bases with Scorpions and maybe a few Gauss Warthogs.
    8. Every time you take out a base, make sure to leave a few troops there so it doesn't respawn! Those troops will get attacked, so be ready to replace your guards at the dead bases.
    9. Work your way through the map being generous with Canister Shell attacks.
    10. Take out all the minor flood bases, then use your left over-non guard troops and the Spartans to make quick work of the Flood Boss Structure.

    Overall a pretty fun mission, you get resources quick enough and two bases so it's quite enjoyable and satisfying. There will be a lot of flood, but they aren't a match for Scorpions!
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