Release 0.13.5: enemies guard territory
Solo enemies patrol local sectors, react to sight and gunfire, search the last known position and return home.
From pursuit to awareness
Bots no longer know the player's location at all times. They patrol a bounded region, engage on line of sight, investigate audible shots, search briefly after contact and then return to their post. Walls are breached with HE only when that action serves a real objective.