Guys!
So we played TDDUP last night with objective 1C, which states:
Keeper wins if shoggoth kills an investigator {…}
Investigators win if they escape the map {…}
Well, my shoggoth couldn't catch them in time, but I killed an investigator with a zombie I had on hand. I killed an investigator, but not with the shoggoth. One investigator escaped the map, one died. SO…who won? Me? Them? Stalemate?
Cheers for your thoughts.
K xx
Stalemate.
You could also say: a tie.
Or: None has won!
As a general rule: If neither the Keeper nor the Investigators achieve their goal, there is no winner.
According to the box-text on pg 15 of the rulebook this is a valid outcome of the game.
Another example would be this: Also some objective cards mention this: no player wins (including Keeper- and Investigator-players).
All the best!
Mad
The one who had escaped - won.
MyNeighbourTrololo said:
The one who had escaped - won.
Probably and likely. Haven't thought about this alternative. Am always thinking in "full" bodies - Keeper vs. the group of Investigators. Also I admit it: I did not read the OP with my full attention. 
All the best!
Mad
MyNeighbourTrololo said:
The one who had escaped - won.
Understandable conclusion, but the FAQ states this:
Q: What happens if the Objective card requires all investigators
to escape, but one of them was killed before the finale?
A: In order to win the game, only 1 investigator per player
is required to escape. If an investigator was killed before the
finale, the player will receive a new investigator. However, if an
investigator is killed during the finale, the investigators will not be
able to win the game (since he does not receive a new investigator).
So no joy there, unfortunately.
K xx
The mansion won.