Overview
The doom legion is planning a counterattack. Alliances must complete radar tasks to gather clue points and locate the Doom Legion base to stop them.
Once unlocked you have to wait on the Sky Eye system cooldown.

Eligibility
You must have been in the alliance for 48 hours and been offline for less than 72 hours to participate
Your base level must meet the selected difficulty.
Event Start
Once Enough points have been gathered the alliance leader or any R4 can search to find a Doom Legion Base and start the challenge. Before searching you can choose the level of the Doom Legion Base. The higher the level the harder the enemies but better rewards.
Earning Points
Earn clue points by completing the following:
Kill Doom Legion Enemy | +300 |
Kill Doom Elite | +300 |
Kill Doom Walker | +300 |
Kill Zombie | +10 |
Assist Allies | +10 |
Radar tasks/digs | +10 |
Rules
Zombie troops will attack bases meeting eligibility requirements only.
Zombie attacks bypass shields, make sure defenses are on your wall!
Once a base has been breached it will not be attacked again that event.
Rewards


Stronghold Levels
To unlock the next level stronghold, your alliance must have 20 members successfully defend against the attack.
Stronghold Level | HQ Level Required | Enemy Power |
---|---|---|
1 | 18 | 6,783,000 |
2 | 20 | 8,995,500 |
3 | 22 | 12,123,500 |
4 | 24 | 14,616,500 |
5 | 26 | 18,267,500 |
6 | 28 | 23,457,000 |
7 | 29 | 26,404,000 |
8 | 30 | 29,319,000 |