How to survive the doomsday zombie group and return to the base safely. Especially in the corridors occupied by monsters, try to avoid being discovered by the patrols, because the early weapons and ammunition are poor and the power is also poor! It's best if you can't fight without fighting, and run away if you can!
After the gun is fired, the enemy will chase you from all directions. At that time, there is nowhere to hide if you want to hide. In the early stage, you should fight monsters in the base to upgrade, first raise your level to level 20 and then go out and wander around! Similar to the novice tutorial! Learn to judge the level of the monster, and run if you can't beat it!!