this will come in handy:

bind "key" "sv_cheats 1; achievement_status; sv_cheats 0"

however, we'll need a server that allows sv to use it.

Hello Muff, are you interested in obtaining those elusive campaign-long achievements (i.e. DO NOT DISTURB, SAFETY FIRST, NOTHING SPECIAL, STOMACH UPSET, etc.)? I will be forming a team, comprised prefrerably of friends, whose set objective is to get said achievements all at once. Please let me know if you would like to be part of this team by commenting on my profile.