From Halopedia, the Halo wiki
Halo ActionClix was announced on the February 2, 2007 and released on September 18, 2007, exactly one week from the release of Halo 3. It brings new game mechanics to the WizKids Clix game franchise, such as weapon swapping, figure respawning and vehicle-based combat. The set includes around 84 figures, which includes preview content for Halo 3.
A number of vehicle packs are being made, one of which was a battle-damaged Scarab released exclusively throughout the San Diego Comic Con on July 26–29. Although it is now available through Bungie.net's online store. Figures are to be sold in randomized booster packs, where the vehicles and starter set are to be sold in a diorama display format.
Special Pre-release figures were available at Gen Con Indy August 16–19.
The basic rules for the game were released on August 14 on the Wizkids website.
List of ActionClix packs
This is a full list of the Halo ActionClix packs.
In the UK, the Hunter and Booster packs are being sold in Game stores.
List of ActionClix figures
This is a full list of the Halo ActionClix figures, arranged by series, faction and rarity.
Promotion 500 Master Chief
The 500 Master Chief was a promotional Halo ActionClix figure. It was available as a promotional product, and can no longer be found in the Target stores that it was exclusive to. This figure features the Master Chief from Halo 3, wielding an MA5C Assault Rifle. Its faction is UNSC, it had 125 points, its rarity was promo.
MA5C ASSAULT RIFLE: When this unit succeeds at a shot and the attack roll is doubles, this unit can shoot again at any target.
FULL BURST: When this unit succeeds at a shot and the attack roll is doubles, the shot deals an extra two damage.
HAND TO HAND ATTACK: When this unit succeeds at a shot against an adjacent unit, the shot deals an extra one damage.
Promotion 501 Arbiter
ENERGY SWORD: This unit can shoot only adjacent units. When this unit succeeds at a shot, roll a die. The shot deals extra damage equal to the result.
JUMP: When this unit is dealt damage from a grenade, reduce the damage dealt by 1.