Cold Stream
Tips, tricks and attack spots.

Map 1:
(1)When heading straight out from the safe room/area, on the right, when able to head up onto land, there is a moly + one other item (varied on whether it spawns and item type (usually adren/pills)).
(2)There is a ledge just before the bridge, as the survivors first turn left, when they get just before the bridge, you can possibly jockey/charger/smoke them back down, for abit of dmg (charger will dmg, jockey/smoker will make them grab onto the ledge).
(3)At the bridge, there is a possible charger spot, just to the left as your heading towards it, it doesnt add hardly any fall damage, but puts the survivor well out of the way (possible to charger up the bridge also if needed).
(4)Death smoke @ wooden house as surv's jump out the window, better is smoker stands on the stairs and pulls than actually near the window. Hard to kill through the house, but possibly not impossible.
(5)Broken tree forces survivors to walk over it, this allows for a smoke chain (pull down, they go back, pull down they go back etc etc) also possible with jockey and charger.
(6)Final attack, able to spawn left and right of saferoom door, charger can charge surv's back up, but he will stop before he exits the tunnel because of wooden planks + angle of curb.

Map 2:
*First attack can take place anywhere from the start to the tank, but save the good infected for tank.
(1) A tank will always spawn at the wooden ramp that leads up to the road, none of the cars are punchable (possible hiding spots ;)), also there is another way up, that involves a small ledge, just left of the wooden ramp, much safer to climb. Able to charge people down, smoke and jockey down. Also tank has multiple rocks he can use to hit survs with. There is also a wooden tree trunk to the right of the road down
into the next water area, which is punchable aswell, and a car further on from there. (always 2 medkits @ tank, punching off the ledge down below into the water = insta incap / death, dependant on distance they travel).
(2)Alarmed car is found after the tank, on the next bit of dry land, its abit out of the way, but a good smoke, jockey or charge will do the trick. Also a possible death pull if you can pull them at the right angle as they go to jump over the fence to the next area.
(3)After the jump mentioned above, there is another drop that leads to another area, you can climb the metal fences (even though it doesnt look possible) because they are ladder looking. An incap as 3 jump results in a death incap (inability to res).
(4)Medkit and pills can be located to the right of the concrete stairwell just before the small event (where you blow up the explosives).
(5)On the event, there is not much room for an attack, there is however, fire near the 2 coaches, that can have a smoker / jockey / charger put the survivors into it, and it hurts like hell (roughly 5hp/tick). Also on the CEDA hut (where there is a fence in the way) you can climb ontop of this fence for extra protection, you cant move onto the hut, so behind you is always safe (good spot unless a spitter gets you up there).
(6)As you enter the next tunnel, there is a death charge just at the end of the tunnel, also the water drags the survivors towards the end, you can place a smoker behind the 2 boxes at the end and a jockey next to it, and jockey the guy down (he will grab the ledge, not insta death) BUT if he doesnt move when he gets resed, he will fall straight back down ;).
(7)Final attack, there is a small corridor before the saferoom, a good spit/smoke will result in a few extra points, possibly an incap.

Map 3:
(1)Death charge @ first ladder they climb up if the survivor lands in the water through the gap in the fence (same will work for jockey to).
(2)Possibly always either a wandering witch/tank on the middle up to the top of the concrete stairwell leading to the freeway.