Tom Clancy's Rainbow Six Extraction

• The goal in most situations is not to trigger alerts. An alerted enemy will start to gather up energy Goku-style and then release it to trigger an alarm. Killing them before that happens stops the alarm.

• Using silenced weapons in almost always the right choice.

• Smoke grenades and later flash grenades make for easy melee takedown.

• Don't be afraid to extract if things are going to hell.

• Playing solo is viable, the enemy count scales well with the number of players.

• The usefulness of the starting drone is marginal but the auto-scan drone you get later is excellent.

• Don't take ops that aren't at full health.

• Stealth is much easier than loud but not always doable.

• Nests start spawning enemies when alerted making it a good idea to kill them.

• Alarms have limited range.

• There is no friendly damage except in special game modes.

• Because there's no friendly damage, you can remove spores from other players by doing damage to them: meleeing, shooting, explosives. You can remove spores from yourself by throwing explosive at your feet.

• Enemies may react to noise but they will only raise the alarm if they actually see you so don’t be afraid to make noise if needed.

• Airlocks can contain enemies.

• In multiple mission types the next objective(s) are automatically revealed when you start doing the first one (e.g. picking up canister for delivering explosives, triggering seismic machine or scanner, etc.)

• A suppressor will greatly decrease weapon damage so you may want to have at least one weapon without it.

• Nests and spores will count as kills for several studies.

• Your flashlight can highlight enemies behind breakable walls.

• Marked enemies are highlighted differently based on if you can hit them through wall.

• Smasher (big bulky enemy) can only be damaged/takedown on their weak spot from behind.

• Apex (the big enemy with tentacles who summons other enemies) will shock you and drones if you get too close, which makes it impossible to takedown.