MXM’s new content called Natium Defense Line will be updated on September 13th.
Natium Defense is a PvE game mode that runs only in Nightmare difficulty. The objective is for players in a group of 5 to protect Natium from 30 enemy waves. Players need to have an effective strategy in order to kill enemies approaching from all directions, and empower the ally base with resources you get from particular monsters.
The official MXM homepage mentions that the game mode will be available as of September 13th, and it will be a PvE ranked mode. As it is a ranked mode, only players at level 35 with a minimum number of 10 masters are allowed to participate, and the season will reset on a monthly basis.
Medals and Gold are awarded based on the rank on the leaderboard at the end of the season. Season 1 will award 100 medals and 50,000 Gold to the 1st placed winner, and the prize pool is up to the 999th player.
1st Place: 100 medals & 50,000 Gold
2nd Place: 50 medals & 10,000 Gold
3rd Place: 10,000 Gold
4 - 10th Place: 5,000 Gold
11 - 999th Place: 328 Gold