How to start
Speak to Captain Cabrera
Kill Creatures with critical hits: 0/20. Skags: Inside the Mouth, Spiderants: Thorax, Varkids: Head, Stalkers: Head, Threshers: Eyes on the tentacles and head.
Assemble in Arena
Go to the North from the desk with Captain Cabrera head to the middle the Annex to the switch. Throw it to begin the battle.
This round of the Creature Slaughter begins with Flash Stalkers. They are very quick and don't usually cloak, just charging right in at you. These start things off. Get through 6 of them and you are off.
Now you are going against Threshers. There are also a few Stalkers thrown in for good measure, to make things harder. Take them out and you are over the midpoint.
Yet more Theshers for you to deal with in this round. Once again, they have Stalkers backing them up. Only a limited variety, but enough.
This final wave is a massive number of Spiderants: Spiderant Matriarch, Spiderlings and a few more types. Just keep on the move and avoid their webbing to stay alive. Focus on the bigger Spiderants first as they pose more of a challenge. Save the smaller ones to get a second wind off them. This is the final wave after all. kill them all and you're onto the last round.
TURN IN: Captain Cabrera
Money and XP
The fourth round of the Creature Slaughter awaits!
Only one round to go -- good luck.