Beardhammer wrote: Engineer is very, very simple to grasp - run around, put your buildings down, and stay nearby to keep them healthy - you'll eventually want to learn things like the dispenser jump (build a dispenser, jump on top of it, jump and plant your teleporter exit while jumping on a surface that's usually out of reach, then take your teleporter to the new vantage point), and better hiding places for your turret and buildings.
Nice. This will be fun.
What I'm doing at the moment with engi is build a lvl 3 sentry, move it in a terrible spot (near the train tracks in that ctf map for example) and kill their next spawn wave out of sheer surprise. Grab it and run away if they outrange it. Then I try sneaking in a port exit in their base.
Sometimes I build one right behind a door, move close and open the door if there are enemies nearby, then move back before rockets and grenades hit.
If he has a Medic, you can't take him alone - though if you're in a forced confrontation, try to kill the Medic, not the Heavy.
Even flaring the medic twice doesn't kill him . And they usually expect short range flanking.
I don't have the axe.
Also, I'm amazed at the amount of teamwork and cooperation the players of this game exhibits.