⚠️ The game will freeze on the loading screen if you try to host a second game after switching maps. To avoid this, you must restart the game between every map change.
How to unlock 'The Lobby' and 'Backstab'
ℹ️Both [The Lobby] and [Backstab] have extremely inconsistent triggers. If you are having trouble unlocking them, these community-tested tips might help:
It's been noted that [Backstab] can pop when hosting solo, after taking out your knife ('F') and idling for a while. If it doesn't work, you can try the below.
Both achievements seem to trigger much more reliably when you are not the host. Let a friend/alt host the session.
For [Backstab], after you knife the host, the host should NOT respawn and should NOT ALT + TAB. The joining player however should ALT + TAB. If it works, the achievement should pop after a few minutes while tabbed out.
Running the game in windowed mode by pressing ALT + ENTER on both sides might also help.
For [The Lobby], have the host hit ESC and go to the lobby before you join. The achievement seems to pop more consistently when you connect directly into the lobby rather than into an active, ongoing map.