Defusion maps are the opposite of hostage rescue maps. Terrors attack, CTs defend, its that simple. Bomb Area A:
CT's spawn real close to the second (B) bombing area. But since most terrors run for the first (A) one, most of your defenses should be there.
Go the the first area and hide beside this crate if a terror walks in front of you take him out.
Another good spot is beside the boxes by the bomb target . If a terror trys to set the C4 he'll be an easy kill for you. Bomb Area B:
If you jump up onto the crate by the opening you'll have a good view of most of the area. And you should be able to take out any terrors that come threw the opening below you.
Once agian if you sit beside the boxes by the target you'll be able to get anyone tring to plant the C4.
Offence: Terrorist
Try to get to a bomb target as quickly as possable, running with your knife makes you faster then running with any other weapon.
Bomb Area A:
The easiet way to area a in threw the long hall . If you can make it threw there with out getting shot at, you should be able to plant the C4 while the rest of your team deals with the CT's. Try to hide the C4 behind some crates to make it harder for the Ct's to find.
If you can't make it threw the hall, go around the other way and come up behind the CT's. Go threw the door and plant it.
Bomb Area B:
It's better to go around the other way to get to area B. Just watch for snipers and keep ducking behind boxes to stay out of their sights. Then go up the hill, turn right and go the back way . It takes longer but it'll keep you out of the fire fight that's probably going on.
If you take the faster way, Straght to the target, keep and eye out for snipers. Since it's a long and straght way from the opening to the target snipers won't have much trouble taking you out.
Sniping: Counter-Terrorist
Being an fairly open map there is lots of good sniping spots in dust.
Standing here . You'll have a good view of the hall and the door, this is probably the best spot in the map and good sniper should have no problem taking out most of the team.
Another good spot is here. it's great for taking out anyone coming down the hill or out of bombing area A.
For area B you should snipe from here . Unless somebody comes around the back way you shouldn't have any trouble getting anyone coming at you from the front.
Another good place is up by the crates , it gives you more cover.
Sniping: Terrorist
There is only one real good sniping spot for terrors. Here at the top of the hill. You'll be able to get any CT's coming around that way and be able to provide cover for your team.
Dos and Don'ts
Here's a list on thinks to do and not do while playing Dust.
Don't:
Play unless you know how to set the C4.
Stay in one big group if you're a CT. There are two targets in Dust, try to defend both.
Do:
Buy a defuser if you're a CT, it'll make your job easier.
Make sure you have at least one defender at each target most of the time.