What Does “Entry” and “Kost” mean in Rainbow Six: Siege?

Tom Clancy's Rainbow Six Siege is a first person shooter game all about tactics, trades, and careful decision making. In both a ranked match and in the pro scene, there can be a lot of game-specific terminology that many newcomers may not understand.

Though some of these terms may seem obvious, many can be strange or confusing, which is why we are here to explain them all! For other Rainbow Six Siege terminology, check out our Rainbow Six Siege dictionary article.

What Does Entry Mean In Rainbow Six Siege?

In Rainbow Six Siege, "entry" is simply a shorthand term for the opening kill or opening kills. Certain operators are known for being better at getting the opening kill, and they are usually operators on the attacking team.

These operators such as Ash, Hibana, and others are mostly fast with high damage weapons, getting kills early on for the attackers. As the defenders are, of course, defending, a defender is seen as less active than an attacker, which is why they are discussed less when it comes to opening kills.

For these fast-paced plays, ping can often interfere with the game plan. Check out our article on how to fix crashes in Rainbow Six Siege if you seem to be having trouble with your game.

The first kills of the round can also be called the opening picks, as the attackers and defenders "pick off" the first operators of the enemy team. Of course, the more kills the teams can get early on, the greater their advantage as the round and game continues.

Despite this, the opening kill of the round can go to either team, the attackers or the defenders, with commentators of pro games often referring to the opening picks of both teams, in each round and for the overall game.

What Does Kost Mean In Rainbow Six Siege?

KOST is an acronym standing for (K): Kill, (O): Objective, (S) Survived, and (T) Traded. Used similarly to a win rate for teams, the KOST of each of your teammates will show just how useful they are to the team.

KOST shows you the average number of times each player in the match has gotten a kill, secured/defended the objective site, survived the round, or traded their life.

Most of these quantifiers are also measured separately, such as survival rate for "S" and trade differential for "T", but the difference is KOST gives the player and the audience a bigger picture about who playing is truly useful.

Whether during play an operator is eliminating enemies, planting the bomb on objective, or simply anchoring and thus surviving for the time limit, KOST will show how much these players are contributing to a win.

The average KOST percentage is 65%, and anyone with a low KOST percentage is likely not a team player, choosing to rush in and play alone, and dying before they can get a kill, or do anything else to help the team.

Along with their points in the match, their Rainbow Six Siege rank (check our article on the average Rainbow Six Siege rank for more), and their kills and survival rate, KOST gives an indication of a player's skills.

If you want to win more than you lose, increasing your KOST is the best way to do so. With that in mind, it's time to hop into a game and dominate your enemies and opponents to increase that KOST score!