Getting dropped from Square's servers during a mission kicks you back out to the main menu, where suddenly the vast majority of Hitman's content disappears. None of the featured content, contracts, escalation missions, or Sarajevo Six bonus missions are available offline. The only content you can access are the story missions (there are now two, not counting the tutorial prologue), and even then you are stripped of the in-game challenges and all of the starting locations, weapons, gear, and disguises you have unlocked. You can't even view the lackluster stats that the game tracks – apparently an online connection is absolutely vital to find out how many headshots you've accrued.