i finished quake remastered the other day and
in order to kill shub-niggurath you need to do a thing called telefrag, which means teleporting to her exact location to one shoot her
and i had to google it because at no point in the campaign there's no explanation whatsoever and i found that kinda weird
this one is a funny one, because at the time of Quake's release, telefragging was a known verb of first person shooters. Telefragging is something that you can utilise in Doom's singleplayer on enemies, (and is in fact something that enemies can do to you as well) and you can also do this in Doom's multiplayer. Naturally, it's also an important tactic in Quake multiplayer. So, it's just something the designers kinda expected you to have the literacy of if you were playing Quake.