Sentry Building

First off i am not going to tell you where to build one. Look at the maps section for that. I am going what to build the sentry on or around. Like try to build the sentry in a dark place. For example in the key room in 2fort5 or above ground like in Rock1 on the ledges around thr courtyard. Here is something. Build a sentry on a Backpack or on a Dispenser. Another thing, don't set up sentries to close to one another. Or a napalm or a mirv grenade will hit/kill them both. Seperate then a little bit. Don't build them where the crossfire will hit the sentry. I know to a given point they will hit each other, but make it so they will not always shoot each other.

Here are some good spots that will get you about some quick frags in Well6.

•     On the top of the enemy's base, (yes this is a dangerous one) goto outside elevator, take it to the roof. First build a dispenser near the exit of the elevator. This will slow down the enemy and protect you and your sentry. Now build a sentry at the top of the picture. Make it so that only the nose sticks out (you have to rotate it). You can build it there or drop down to the very small ledge next to the picture. Rotate it out, and start to up grade it.  When the first 3-4 guys are killed by your sentry they may think they were killed by some one else on the land or up in the sniper area. If they see the measage "Billy hates DieHard's sentry" they will start looking for it. They will send rockets at it, or they will try to take the elevator to it. This is where your dispenser comes in. When you get the measage "Enemies are using your dispenser" Blow it. Mostly likely you are to late. You have to stay in view where you can see the enemy using the elevator. Blow it when you think they hit the top of the elevator. This will take practice and timing. It is a good trick for some quick frags.
•     There is another spot to kill enemies in both the bases using the same spot. take the elevator in the sniper area to the upper supply area. Build a senty between the two corner  backpacks. Run around and upgrade it. This will get you some good frags and you will be able to say in that supply area for a long time.
•     I also like to build a sentry on the bridge going to the flag tower. Build your gun on top of a dispenser for maxium damage. Only weakness is the water access.
• The rest of well6 is in the maps section.

The Dispenser is an awesome weapon. I love to use it to block paths off. When then enemy hits it blow it. This works good in 2fort5 to the sniper area. put it just around the coner so they don't have time to react. Let ur team mates know that you are doing this because they may want to get in there. Also use it where it will get in the way of enemy *trying* to run away from you sentry. This will slow them down enough so you sentry will kill them. Good place for this is in 2fort4 build a sentry in the left nook as u come down the ramps, then build a dispenser near the key  entrance. See  the picture below. Also if the enemy get close, blow it. 
Another good spot is upstairs.  (see pic below) There is a sentry in the shadows and a dispenser to slow them down. 

Blowing the Dispenser

I love to kill the enemy with my dispenser. In some match i can get 5-15 frags with my dispenser only. They key is to build your dispenser in highly travel areas. Lead an enemy to the area and blow it. Keep in mind that you have to stick them with the railgun or shotgun a couple of times to ensure a frag. The two pics above some good spots. so is this one:
When you see an enemy runing up the ramps the has most likely taken some damage from the defense. blow your dispenser when they get close to it. There are some other maps you can stick your dispenser, but there is nothing that stick out in my mind. If you feel you want to add something plz EMAIL ME!

Gernading is the extermly important. Timing is everthing. I love to have an enemy chase me. I pump to rounds in to him and run. Then i hold a grenade for about 2 - 2.5 seconds (depends on the attacking class), then drop it. Most of the time i hit'em. If not he is dead, he is  severely damaged to where i have to option to turn around and kill'em or hit'em with another grenade. Also if you throw an emp into the enemy's resupply room it will detonate all the ammo in it. This cause hell for the other team. The Emp will only to damage to senty with Rockets to identify the sentry level please look at this link (it will open a new window so you can still view this page)
You can use the emp to blow up detpak, pipebombs, and backpacks. The detpaks and the pipebombs will hurt if you are close enought to them, because they act like there are detonated.
    You can try to jump with a grenade, but after the explosion you hardly have any health left. But you can still do it.
     Another thing I like to do is throw an EMP at the feet of a hwguy. He will start to shoot at me and the EMP will go off. now all it takes is the double barrel shot gun to finnish him off. Personally i think the Hwguy's greatest foe is the engineer. So, if you see an Hwguy then you have a good chance of killing him. Given if you are not reckless. By hitting with that EMP first he will be hurting, and the health will be the around yours.

 

Findind Spys

First off, this special, just what every medic and engineer should do. I always use the ID tag many player never use this. If a player of the same color is running and strafing a lot he is trying to avoid being detected. This means he is most likely a spy. Shoot'em and alert your teammates. Better safe than sorry.

Another way to detect spies is with your trusty spanner. If you hit a teammate you will not anything with them, if they don't have full armor you will see grey squares. This means you are giving them armor. If you hit a spy you will see red squares. There is nothing better than seeing this get posted on the screen: "Billy is axe-murder by DieHard"!

Team Calls

You should always keep your team in formed. I like to tell them where my dispenser is, and when and where the enemy is attacking. Here are the binds i use:

bind . "say_team Sentry up in common room"
bind o "say_team incoming from elevator"
bind a "say_team Dispenser in Basement"
bind , "say_team Incoming down ramps!"
bind s "say_team Incoming"
bind z "say_team Dispenser in Upper resupply room"
bind F7 "saveme"
bind F6 "saveme;say_team DieHard needs health on 2nd floor"
bind F5 "saveme;say_team DieHard needs health in Flag room"
bind F8 "saveme;say_team DieHard needs health in basement"
bind w "say_team Sentry up in ramp room"

Killing the Offense

As we both know the engineer is not that strong, so you have to use your brains. First off learn how to hide and shoot. Don't camp because they will expect you there the next  time, try to go in a different location. Hit them first with the railgun first, because they will be far away, when they get closer use your shotgun.
    Next step is to get them to chase you. this is gernerally easy once you shoot them once or twice. Use the Grenading trick that i told you about earlier. This will work sometimes but you want to have some more options to kill them.
    Have them chase you into the line of your sentry's gun site. Once they start chasing you they only have one thing in there mind, and that is to kill you. They will never see your sentry waiting to kill them. Nice little trick, don't you think?
    Another thing you can do when the are chasing you is run backwards (you should be doing this all the time when being chased), and pump in some shots of either shotgun shells or rails from the railgun, it all depends on the distance. So here is where you kill them, you run by your dispenser hidden in the shadows. Now wait until they are close to it and blow it. This has killed the very elite player in TF. It is a very valuable asset to killing a single enemy.
    Also if you see a Hwguy kill'em. throw the EMP and/or a grenade at him or let him start up his gun, duck around a corner to avoid damage please. When you hear the gun wind down, come out and shoot him. If he starts his gun up again for some reason throw another grenade. This should kill him.
    Some attacking demomen like to set up there pipebombs in your base. take these out with an EMP. Stand back, because they are just as strong as they would be if the demoman detonated them.