The "Complete Pack" typically includes the base game and all four major story expansions, plus aesthetic additions:
Increases the player rank cap to 50 and adds final endgame content. File: Sanctum.2.Complete.Pack.zip ...
Provides alternate aesthetic skins for the four main characters. Core Gameplay Mechanics The "Complete Pack" typically includes the base game
The primary first-person shooter/tower defense experience. File: Sanctum.2.Complete.Pack.zip ...
Adds the character TSYGAN, new maps, weapons, and towers.
Sanctum 2 is unique for blending two distinct genres into a seamless cooperative experience: Sanctum 2 - Review
Features four new challenging maps focused on complex maze building.