Hint :
Tip: Don't be stingy on the tear gas and flashbang grenades. You've got ten of each; use one of them whenever you enter a room.

Tip: Always make sure you've got someone to cover your back. You never know when a bad guy will turn the corner while you're busy reloading.

Tip: Don't forget to report in on all terrorists and hostages. It's not enough to handcuff hostages; you've also got to call for trailers to collect them. Ditto with terrorists.

Tip: Unless stealth is necessary, always load up on the firepower. You never know just how useful it is to shoot through a wall.