If it's possible to get out of the building or the immediate area that the murderer is in, this is always preferable to hiding. Assess your location and decide if you would be able to escape to safety.  If others don't want to run with you, leave them behind. You can't let them prevent you from escaping. If you run, don't worry about your belongings. Leave your stuff behind. Be sure to keep your hands visible as you flee the scene. If the police are there already, they may mistake you for the murderer. Run in an erratic pattern. This will make it harder for the murderer to shoot you if he comes after you. Try to put as many obstacles between you and the murderer as possible. If you choose to run, it's important to head for a location that will be safer than the location you just left, just in case the murderer pursues you. While you may just want to get out of there, don't leave without some kind of an idea of where you will go.  If possible, get to a location where you can call for help. A secure location like a police station is the best option, but a neighbor's house is better than nothing. Try to avoid running into your neighbor's house if the murderer is watching you. You don't want to put them in danger as well by leading a murderer into their house. If there is nothing around the area, head for the woods instead of a clearing. This will give you many more places to hide. A full parking lot will also provide lots of good hiding opportunities. In some cases, you may have no choice but to fight back against the murderer. This is generally not a good idea unless your life is in immediate danger, but if it comes to it, do what you need to do to survive.  If you decide to fight, you need to commit to it. A half-hearted attempt at fighting back will only put you in more danger. Your goal should be to disarm and/or incapacitate the murderer, and then run away as fast as possible. If you have a gun, you may want to use this to defend yourself. If not, you may also be able to incapacitate the murderer using...

How would you rephrase that briefly using Chinese?
在条件允许时，你可以逃走。 朝安全的地方逃跑。 如有必要，做好战斗的准备。 使用临时武器。 如果被抓，就服从凶手的命令。