A mushroom-centered formation is the key setup shown for reaching more than 900 kills in Clash of Critters Horde Invasion. Use the video’s formation as your baseline, preserve the relative positions between units, and avoid changing several placements at once. Treat 900+ kills as a performance target rather than a guaranteed result, since your roster, upgrades, and execution can affect the final count.
Use the Mushroom Formation as Your Baseline
The formation shown by Leba_09 is the main strategy for this Horde Invasion run. Its value comes from reproducing the complete arrangement, not from using the mushroom unit in isolation.
Follow these priorities:
- Place the mushroom unit where it appears in the source formation.
- Match the surrounding unit order and spacing as closely as possible.
- Keep the formation consistent between attempts.
- Change one position at a time when testing an adjustment.
- Judge the setup by its total kill count, not by the opening portion of the run.
The source video is titled “Clash of Critters Horde Invasion formation with mushroom for 900+ kills” and demonstrates the formation in action.
How to Recreate the Setup
Start by treating the video’s visible arrangement as a template. Pause the video when the full formation is on screen and compare your own deployment before launching the invasion.
Deployment Checklist
- Identify the mushroom unit first.
- Note which units are positioned closest to it.
- Copy the formation’s front, middle, and rear placement pattern.
- Check that no unit has been shifted into a different role or lane.
- Begin the run only after the full arrangement matches the reference as closely as your roster allows.
The available source information does not identify every unit, upgrade level, or placement coordinate. For that reason, the video itself is the authority for the exact lineup and layout.
Protect the Formation During the Run
Keep the formation stable once the invasion begins. Moving units repeatedly makes it difficult to determine whether a result came from the original setup or from a late adjustment.
Use this approach:
- Let the formation run long enough to show its kill-count trend.
- Avoid rebuilding the entire arrangement after one weak attempt.
- Record which single change was made between tests.
- Return to the original setup if the change lowers your result.
- Compare several attempts before deciding that a placement is better.
This testing method is especially useful when your units or upgrades differ from the setup shown in the video.
Troubleshooting a Run Below 900 Kills
A result below 900 kills does not automatically mean the formation is ineffective. First check whether your arrangement actually matches the source.
Review these possible causes:
| Problem | What to check |
|---|---|
| Mushroom is in a different position | Restore its location from the video |
| Nearby units are rearranged | Match the original order and spacing |
| Several changes were made together | Test one placement change at a time |
| The result varies between attempts | Repeat the same setup before judging it |
| Your roster differs from the video | Use the source layout as a reference, then test compatible substitutions carefully |
Do not describe a different lineup as the same formation. If you replace a unit, note that you are testing a variation of the mushroom setup rather than reproducing the demonstrated run.
How to Practice for 900+ Kills
Use repeatability as your first milestone. Once you can recreate the formation reliably, compare the kill totals from your attempts and identify whether your changes improve or weaken the result.
A practical testing cycle is:
- Recreate the mushroom formation from the video.
- Run Horde Invasion without changing the arrangement.
- Record the final kill count.
- Repeat the same setup to check consistency.
- Adjust one position only if the result remains below your target.
- Compare the adjusted formation with the original.
This keeps the 900+ kill goal measurable and prevents random placement changes from obscuring the strongest version of the setup.
Source Reference
The formation is based on Leba_09’s Clash of Critters video:
Clash of Critters Horde Invasion formation with mushroom for 900+ kills
Use the video for the exact unit arrangement and visual placement. The source does not provide enough information to confirm universal unit requirements, upgrade thresholds, or guaranteed kill totals.
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Player Comments
81 players commented on this guide.
Nice guide. I am checking the other Clash of Critters articles next.
Good guide for Clash of Critters players. The strategy part was useful.
I wish I had read this before upgrading the wrong thing.
Can you add more details about strategy in a future update?