Fiend-Slayer

The Fiend Slayer set is chain armor directed to the ranger class, you can find this armor in the haven on Hallow Eve. Being the easier to obtain of the two ranger sets this isn't the best armor to bring into battle, but still works if you're a beginner.

How to Obtain
You can find this as loot after defeating one of the event bosses or visit the Ranger vendor in the haven mansion.