Office may be shown in the thumbnail, however this works for any map that you can start with Practice with Bots

Play the desired map related to the achievement with Easy - Expert Bots

Join the CT side

Type

mp_round_restart_delay 0.01; mp_roundtime_defuse 0.01; mp_freezetime 0; mp_maxrounds 100; mp_restartgame 1

into the console

Wait until the game is over

If the achievement hasn't been completed, follow Steps 1 - 4 again.