In "Call of Duty: Black Ops III" Zombies, what does completing all the main easter eggs reward you with?

In Call of Duty: Black Ops III Zombies, completing all the main Easter Eggs rewards you with 1,000,000 XP. This significant amount of experience points is given as a reward for the players' dedication, teamwork, and problem-solving skills in successfully solving the intricate puzzles and completing the challenging main Easter Egg quests within the gameplay. It serves as an incentive for players to explore and engage in the full extent of the game's content, providing a sense of achievement and progression within the multiplayer mode.