Boss Strike 13: Boss Enforcer Shrow's Raid

Overview
Boss Enforcer Shrow's Raid is the thirteenth Boss Strike event, re-introducing Shrow and featuring Silver Wolf units scaled to each player's level.

Some changes were made to the Boss Strike System :
 * No unit limitations
 * Fire or Cold Environmental DoT (see: Environmental Damage over Time). Silver Wolf units (both player and enemy) have been given temporary Fire DoT immunity for the duration of the event.
 * Challenge waves
 * Guild Weight increase

This event also introduced one unique Vehicle. The Silverwolf Crop Buster and the Silverwolf Chunook Helicopter reappeared as rewards during the event. These units were rewarded for completing a certain amount of Tiers during the Boss Strike.

Players had the option to either donate or "FIGHT!" 2-5 wave formations made up of enemy units, with both options yielding a considerate amount of Boss Points that would be added to the guild's Tier pool.

Enemies

 * Level 1-10 tier 1-10
 * Level 11-15 tier 1, tier 2, tier 3, tier 4-5, tier 6, tier 7-10
 * Level 16-20 tier 1-3, tier 4-5, tier 6-10
 * Level 21-25 tier 1-5, tier 6-10
 * Level 26-30 tier 1-5, tier 6-10
 * Level 31-35 tier 1-5, tier 6-10
 * Level 36-40 tier 1-5, tier 6-10
 * Level 41-45 tier 1-5, tier 6-10
 * Level 46-50 tier 1-5, tier 6-10
 * Level 51-55 tier 1-5, tier 6-10
 * Level 56-60 tier 1-5, tier 6-10
 * Level 61-65 tier 1-5, tier 6-10
 * Level 66-70 tier 1-5, tier 6-10