Can I play HITMAN™ offline?

You can play all of HITMAN™'s story and bonus missions while offline.

However, while offline you cannot access Escalation missions, Elusive Targets or user-created Contracts, and will not be able to complete Challenges or earn XP towards your Mastery Level for each Destination.

Furthermore, while offline you cannot access any saved games that were created while online, and vice versa.