Objective: Kill 15 Bosses on any map or mode.

To complete this, you can simply play Endless mode to farm bosses. It can be done at whatever difficulty you'd like, but keep in mind, the higher the wave, the less damage the bosses will take. If you get to wave 15, exit to the menu and restart an endless game to easily deal damage to the bosses during the lower waves.

Objective: Complete the weekly on Netherhold.

Currently, the weekly involves a new challenge where Gunslinger and Sharpshooter are the only available perks to use. It's a fun mode and it's fairly easy as not many ZEDs spawn in this mode. If you normally don't use Gunslinger or Sharpshooter, buy the Dual .500 Magnums and the SPX 464 Centerfire because these are the best weapons that can deal heavy damage towards larger ZEDs while getting rid of a huge horde.

Objective: Find the nether heart.

This will be located near the chapel. Simply break through the wall, enter, and you'll complete the objective. There will also be a collectible next to the heart.

Objective: Unlock the chapel and the dining hall doors.

Most secret doors that can be opened will glow purple.

Chapel doors:


To open the chapel doors, pull the lever, enter, and you'll complete the objective.



Dining hall doors:


To open the dining hall doors, go downstairs and look for this grating.
Shoot it open and fall through to teleport to the dining hall.


Once you enter, you've completed the objective!

Here is a video demonstration I made.

Objective: Complete wave 15 on Endless Hard or higher difficulty on Netherhold.

Set the difficulty to hard and use your main perk to reach wave 15.

After you complete all the objectives, you'll obtain this cute cosmetic item! You'll have a new companion while you kill some ZEDs!