The gnome... again...

[keks]

I know it's probably was just impossible to port all unlocked achievements from episodes to original HL2, but... the gnome... I have to launch the gnome again... :c

[Telehypnotic]

check the guides

[Rico Raccoon]

I believe it's possible to cheat this, by opening console (-console in launch options) pressing Episode 2, then loading the ep2 map by typing "map <napnamehere>" then load the map where you're inside the lab with kleiner. And then use the console command to spawn a physics prop with the command prop_physics_create "/props_name/name.mdl" i dont remember the name of the Gnome prop, but you can look it up. And the best part about these two commands is neither requires sv_cheats set to 1, so you're not disqualified from receiving achievements!

[Podmon]

You can load up old standalone Episode One and Two (they are in Tools section of the library) then close the game to let the cloud update (Half-Life 2 will perform a small update as well).
Open Half-Life 2 and enter each episode main menu, all the achievements you have done in standalone will be unlocked for you.

[Rico Raccoon]

-console in launch options
select that Mutual Fiend Chapter from the menu
get to the rocket and type prop_physics_create props_junk/gnome.mdl in the console while pointing at the floor, put the gnome inside the missile and close the hatch
Finish the rest of the game, up until magnusson launches the rocket in the sky
Remember you can do this console command WITHOUT sv_cheats (I tested it)
You should get the achievement now

[keks]

So the console commands don't break the achievements? Because I once used it just for this damn gnome and I didn't get it. Ok, thanks everyone.

[Rico Raccoon]

Actually now that I'm thinking about, it might not be enough to spawn the gnome prop, it have to be assigned something to make it identical to the one prop you find at the start of the game. IDK someone else might know this.