How to start a Survival Game Mode
1) To start a survival game mode, select New Game and click on Survival.


2) Choose Wave Select and choose Wave 70. This would set the game to Wave 70 so you will not have to fight your way up to 70.

Note: You can also achieve the Clone Wars Achievement here as well as JC Clones can spawn in, so do take the opportunity to kill a clone to get the achievement.

3) Ensure you choose Paris Cathedral as this is the only map (To my knowledge) where Attack Helicopters spawn.



Prep Work

4) Once the game starts, you will have a infinite amount of time to make prep work which would allow you to make the necessary prep work needed.

When you spawn in, you will be in front of the button that will start the survival mode. Turn around and you shall find a table full of Augmentation Canisters and Upgrade Canisters.
You will only require the Drone, Battery Recycle & the Strength Aug.



5) Fully upgrade your drone and battery then head up the stairs. You will find two ambrosia canisters beyound the staircase. You will need to carry and take to shed as seen in the map provided.


6) Once you have taken both of the canisters to shed, you will need double back to the prep room to start the game.



Side Note: You shouldn't need any weapons, but take some just in case the enemy breaches the defences as Grays will be an issue if any spawn in as they will cause radiation damage.

Preparation of Incoming Enemies
7) Once you have started the wave countdown, you will need to rush back to the wooden shack and barracked it with the ambrosia canisters. You will need to stack them to block the doorway leaving a gap to allow the drone to leave, but closed enough for enemies to be unable to shoot you.


8) Use this time to save your game to avoid redoing all the prep work again, in case you fail.
Side Note: This may take several tries as Gray's Radation can cause issues as well as enemy's fire that may fire through any gaps in the defences.
In addition, rockets/explosions can knock the Ambrosia Canister down which would leave you expose so keep this in mind.

9) Hide behind in the corner or wait in the far back of the room and wait until you hear a chopper incoming, then send your drone out.

10) Use the time to see how many enemies are nearby as the more there are in the area, the better your chances of getting the achievement.


11) Wait until the chopper is near the group of enemies then disable it with the drone. If done correctly, the helicopter will become disabled and will crash down near to the enemies giving you the achievement.