Challenge Mode is available in "Delivery From the Pain", and all Steam users who have purchased this game can get a free update. We listen, We care. People playing our games want the best and we want to make your gaming experience worthwhile. Contact us and we will answer each question as best we might, in shortest time. Who would we be without you? Contact with ideas, information, advice, things good or bad. What is Challenge Mode? The core of the gameplay is to live longer in the game as the ultimate goal. The challenge mode uses large map scene, which can be used except for BOSS scenes and other scenes of NPCs. The difficulty of Challenge Mode is divided into Normal and Professional. In Professional difficult, saving file will be deleted when the player failed. The challenge will be restarted. In Normal difficulty, saving file can be saved, and the save rule is the same as the game normal mode rule. The optional characters of Challenge Mode are Freeman Mason, Samantha Aran and Big Brother. The characters retain professional strengths and weaknesses, and players can choose the character to play according to their own preferences. Added Zombie Hoard Rush mode. Start from a shelter, explore around, and collect resources to kill zombies. When Zombie Hoard Rush comes, it will take the shelter as the centre and produce regular zombies to the surrounding scene. At this time, the player will not be able to enter the scene occupied by the zombies. After Zombie Hoard Rush, the survival resources and zombies will be refreshed and regenerated, the difficulty of certain games will be increased. Players are encouraged to explore farther scenes to increase the fun of the game. You can make your own Dog-House and Automobile, no longer limited to the plots and characters. In addition, the fitness system will also be common among the three roles. Unlike DLC, all characters must use traps for hunting and can cook; other manufacturing and learning skills are the same as the main game and DLC. The player will score after death. Each mode retains the record of the longest survival time. According to different days, the gears are pass, good, excellent and distinguished.