first off youll need to "create server" and its very simple just hit creat server when you open up the game
Wiki page to all bot commands- http://tf2wiki.net/wiki/Bots
Youtube help page I know its medic acheivments but the same rules apply-www.youtube.com/watch?v=_V6M0ftWSvQ
The youtube page will give you all you need to get alot of the pyro achievments but if you want to make the bots switch weopons look it up in the wiki page I forgot what it was.
And for those who acheive your achievments, its cool that you guys arent lay but I am
