The game consists of two different modes, the differences between these modes are listed below:
In survival mode:
-A single round will be randomly selected and the player must battle to the death.
-Players will pickup weapons dropped by monsters in the battlefield, only weapons previously unlocked in campaign mode will be available.
-Monsters may drop power ups that may help keep the player alive.
In campaign mode:
-The player will progress through a series of levels and environments, each ending with an appropriate boss.
-At the end of each round the player will be able to purchase new weapons from the store with cash earned by defeating monsters in previous rounds.
-New weapons are able to be unlocked by either completing certain tasks or by achieving an amount of kills, score, powerups etc.
The game features 30 weapons with a select few that are initially unlocked for the players use. However campaign mode must be played to unlock the more powerful weapons.
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