In the new update one of the new achievements is the Chief of Staff achievement where you must accumulate 10 million heal points to unlock the ubersaw!

Follow these steps on how to get to 10 million heal points before the update so you can be one of the first to use the ubersaw!
(probably get patched soon so do it fast if you don't wanna wait years to get 10 million on your own)

Before you start its best if you ran tf2 in a window.

1. Download this map:

http://gangstagang.com/e107/download.php?view.30

2. go into tf2 and open console.. type these commands in console:

alias au "au1"
alias "autouber" "au1"
alias "au1" "+attack; +attack2; alias au au2"
alias "au2" "-attack; -attack2; alias au au1"
bind mouse3 "au"

3. Create a new server with the map you downloaded

4. type in console:
sv_cheats 1

5. make 2 bots
in console type:
bot -team red -class medic -name bot1
bot -team blue -class medic -name bot2

6. type in console:
bot_mimic 1

(In the middle of the map there is a sort of water type thing but its actually an acid type thing and you lose health when you go into it)

8. Trick the bot on your team to going into it and click mouse3 to start healing him (make sure he stays in the water bit or it will be slower to get ubers

9. Type in console:
host_timescale 30

(time should speed up so you get ubers really fast and using the script I showed at the start, when your uberbar is full you auto uber and it just loops)

10. Carry on doing something else on your computer (other than playing tf2) and come back to tf2 in few hours, type sv_cheats 0 in console, kill yourself and then exit the game

Go into the player stats and look at Most Healing and it should be over 1 million.

best thing to do is leave comp on over night and when you get on it in the morning you will have over 10 million healing!