OK, so I've finished the survivor map, and... it sucks. I mean, it was OK when I played it for the first time, but I finished it in under 3 minutes (!), and then I didn't have any motivation to go back. I went back nonetheless, finished additional tasks, turned off the game and forgot there was a survivor mode after 5 minutes.
It's just too predictable, nothing changes. There should be more variety: dynamic objectives, random exit points and barricades forcing you to take different routes. Now I know exactly where's what and what's the shortest route, and differing Alien behavior doesn't change much. After two playthroughs it became boring and pointless. And since there's only one map and there's no such thing as a story mode... I'm not interested in survivor mode anymore. I won't be getting any upcoming DLC.