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Throughout your gameplay, you may notice chat messages pop up. These warnings are important and should be taken seriously.
Here is what each message means:
-"Endure..." - A Proto Hivemind has spawned due to an infected area getting out of control.
What to do: Seek out the infected area and kill the Proto Hivemind (methods can be found in the Help Center).
-"Prepare..." - The Proto Hivemind has started the process of creating a Calamity by spawning a Womb due to a Signal being received.
What to do: Attempt to destroy the Womb or prepare for a coming Calamity.
-"Incoming..." - A Calamity tier mob is heading to a new Objective. The message won't play for the Parent Signal. This message can be displayed multiple times for the same Calamity.
What to do: Run away or attempt to fight the Calamity, assuming the Calamity is targeting you.
Trivia
While there are chat messages (compared by many players to Scape and Run: Parasites), the creator of the mod has confirmed he will not be adding any sort of 'phases', as he doesn't like the concept or the idea to code it.
Gallery
An example of a chat message in-game. Source.