Here is how to unlock “How the Pests Was Gunned” solo in 2025.
Subscribe to the Steam LinkAchievement Engineer In Space map from the TF2 Workshop on Steam. Close TF2 and relaunch the game.
Create Community Server > (achieve_engineer…) and make sure you have the developer console enabled.
Hit “~” to access the developer console. Each command line must be entered in its entirety starting with everything after the slash “/”. This tricks the TF2 Source engine into not registering console cheat commands and allow you to obtain the achievement.
/mp_teams_unbalance_limit 0
/mp_autoteambalance 0
/mp_disable_respawn_times 1
/sv_cheats 1; bot -team blue -class engineer -name Bot01; sv_cheats 0
/sv_cheats 1; bot_command Bot01 "build 0"; sv_cheats 0
/bot_mimic 1
Use Primary Attack (“Mouse1” by default) to make Bot01 build a Dispenser.
/ sv_cheats 1; bot -team red -class demoman -name Bot02; sv_cheats 0
Respawn as a Blue Demoman with the Sticky Bomb launcher equipped.
/ sv_cheats 1; bot_mirror Bot02; sv_cheats 0
/ bot_mimic 1
The bot will mirror your actions now. Select any weapon slot and then select weapon slot 2 to force the red demoman to equip the sticky bomb launcher.
Now position the Dispenser between you and the red Demoman. Remember that the red Demoman movement will be the inverse of your movement. Keep moving around until the two of you are each about 2 meters away from the Dispenser. Stand slightly to the side of the Dispenser.
/bot_mimic 0
Repawn as a Blue Engineer. Move back to where you were standing.
/bot_mimic 1
Press Primary Attack while aiming at the ground between both of you to make the red Demoman fire a sticky bomb. With adjustments and a bit of luck you can make the red Demoman launch a sticky bomb where your crosshairs are pointed. Press Primary Attack to fire at the sticky bomb and make the red Demoman launch another sticky bomb. Repeat until the red Demoman is out of ammo.
If the red Demoman switches to the grenade launcher or whatever other items you had in your loadout, you will need to restart the process. It took two respawns and about 10 minutes to clear 50 sticky bombs in one go.