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The gameplay consists of multiple stages. Firstly, the party has to initialize the experiment through a terminal in the main hub. After Project Paradise has been initialized, the different types of animal food (fragrant venison, toxic sludge, and moist radkelp) must be harvested and inserted into their respective feed troughs. There are 3 areas (A, B & C) that need animal food to be deposited into the trough in the center. The more food collected and inserted into each one, the higher the level of creature which must be defended in the later stages. After the timer for filling the troughs runs out, three friendly creatures will spawn and the party has approximately 10-15 seconds to "meet the friendly creatures".
After the short break, the friendly creatures must be defended from three waves of enemy animals. The first two waves will consist of hordes of glowing enemies, while the final wave will be a powerful alpha creature. The alpha can be either a Level 100+ sheepsquatch, fog crawler, Grafton monster or deathclaw. The alpha will always be a 3-star legendary. Killing the alpha will complete the event. Only one friendly creature needs to survive for the event to be successfully completed.
- The Bear Arm weapon plan is a random reward from the event. The plan must be learned first by the player character, as a requirement to possibly receive the Bear Arm weapon modification plans from this event, as rare rewards.
- Completing the optional objective: Retrieve ARIC-4's shutdown code, will change a few parameters of the event. Firstly, the player character can deactivate the Arktos Pharma robots that patrol the facility. Secondly, the friendly creatures to defend will attack instead of run when enemies are nearby, effectively increasing the difficulty of the event. This includes the alpha boss on the final wave, creating a very risky strategy. Finally, Quercus will heal the friendly creatures between rounds.
- The alpha boss is decided by which creatures are still alive when the final wave begins. If there is a creature from the toxic sludge room, there is a chance to spawn a Grafton monster. If there is a creature from the fragrant venison room, there is a chance to spawn a sheepsquatch. If there is a creature from the moist radkelp room, there is a chance to spawn a fog crawler. If all 3 creatures are alive, it will spawn a deathclaw.
- Playstation 4 Placing venison in a food trough may cause the game to crash.[verification overdue]