Hot fix/update patch on November 30th — Shadow of Fear Steam update #588656

The patches for this hot update are as follows: Game content 1. Put the next free DLC map "Dueling Field" into the game as a trial version, and everyone can experience it first now; 2. Fixed the issue of no zombies appearing in round 37; Safe House 1. Add a guidance icon to the upgrade platform, 2. Solved the problem of incorrect display of guide icons; Underground Facilities 1. Task guidance icons have been added, so players can now turn on the power and not get lost; 2. Set the difficulty of zombies to the lowest level, making it easier for everyone to solve puzzles;