You're going to want to grind a lot in this zone. Just kill everything in your path on your way to each step and that should be enough.

This is the best spot I found for the Infiltrators, but they're actually all over the place close to Brackenwall Village. The clothes they wear blend in with the enviornment, and if that wasn't bad enough tehy're also stealthed and almost impossible to find. Just keep pressing tab and run around the area surrounding brackenwall and you'll target them eventually.

This is the best place I found to do the black shield. There's a lot of spiders and a high drop rate.

The cargo is at the top of the tower, ithania is at the bottom.

This is the spot I prefer to do hungry at, but a lot of people opt for the beach instead(Just go down the path to the beach right here.)

The reason I hunt here instead of the beach is because the ones on the beach cast a nasty DoT that lasts a minute, makes it difficult to bandage, eat or drink and definitely prowl.

Next to his house there's a dirt mound that starts the quest "The Lost Report",

Spiders are all over this place and there's a lot of them. Not a bad grind spot if you're into that. Afterswards, go to Brackenwall Village and turn everything in, Accept "Theramore Docks" then start circuit 3.