Warcher Defenders Orc Codes are codes that players can redeem with the purple orc on market.
There is not a lot of info about how to get these codes, all that is know is that you can receive a code if you subscribe to the Ogre Pixel's mailing list.
UPDATE (Taken from game description):- Thanks for 500k downloads! Here is an Orc-Code: creyuwas (Redeem on market)
- Thanks for 250k downloads! Here is an Orc-Code: muzafusp (Redeem on market)