The game uses checkpoints to save, and for the most part they're well spaced. However Vegas' peculiar difficulty pacing makes for some crushingly annoying sections if you're not on the ball. On the whole, this is an easy game at default difficulty. Employing a regenerating health system, if you take too much damage in a short space of time, you'll die. Step out of the action for a few seconds though, and you'll be back to full health. This coupled with team-mates who can be revived when shot leads to large chunks of the game that can be sailed through. However, on occasion, Vegas throws overwhelming numbers of terrorists at you, often in multi-tiered large rooms.