First off, it needs to be understood that in Counter-Strike: Source (CS), there are many different map types. This type are:
Bomb Map (de). The Terrorist goal in a bomb map is always to run to a particular location (marked on your map) and plant an explosive. The explosive is over a timer, so once it really is planted, you have to defend it until detonation.
The counter-terrorist goal on bomb maps is usually to stop the terrorists from planting the bomb at all costs. This can be done by eliminating every one of the terrorists, defusing the planted bomb, or (occasionally) defending the bomb site until time finishes.
Hostage Rescue (cs). In hostage rescue maps, the principal goal for counter-terrorists is usually to rescue hostages captured and held from the Terrorists. You can also win through the elimination of the terrorist team.
The Terrorist goal would be to simply prevent the counter-terrorists from rescuing the hostages by eliminating them, or maintaining control of the hostages until time expires.
Bomb Maps – Counter-Terrorist. As a counter-terrorist on bomb maps, the best choice (certainly) is always to remove the terrorist team before they are able to plant the bomb. Defusing the bomb making you a sitting duck, which is a situation you want to avoid. Maintaining your terrorists trying to plant the bomb means you are free to remain on the defensive, which gives an advantage.
Bomb Maps – Terrorist. Like a terrorist, your only goal is usually to completely overrun a bomb site. If you can’t take over a bomb site inside the first Thirty seconds, your team will likely lose the round. The best approach is to rush everyone on a team with the exception of A few (tops) one site. The opposite few players will behave as a distraction at the other site, so the counter-terrorists guarding it are not equipped in as re-enforcements.
Hostage Maps – Counter-Terrorist. I have found the best tactic to be spreading the team out and attacking from all of angles. Coordinate a simultaneous attack if possible, but make certain nobody just “runs in, guns blazing,” because that technique almost guarantees death inside a hostage map.
If one side in the attack seems to punch through and get inside the area under Terrorist control, other team should proceed to that area so that you can assist the attack.
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