The Arbiter class in the Decaying Winter mode stands out for its unique ability called shellshot. This ability has two options: the first option is activated in close proximity to the enemy and deals damage in the range from 60 to 75 units. The second option is used when pressing the F button repeatedly at a given time, which creates a shock wave capable of causing 90 units of damage to both the enemy and the player himself within range. For convenience, you can program a macro by tying it to a convenient key other than F. It is recommended to set the game to 60 FPS for optimal performance.