According to the trailer description: Players will choose a level, targets, weapons and then set their own rules for completing the contract based on time, style and witnesses. There are no clumsy editors or complicated mechanics to learn; in CONTRACTS you simply play to create. As an asynchronous mode,CONTRACTS allows fans to compete against friends at any time, regardless of whether they are online. HITMAN: ABSOLUTION will also ship with many pre-set CONTRACTS, each designed by the very best assassins at IO Interactive.
Source: Gamespy