This is not meant as a serious post but it does not mean the contents are without application to real life. . In my household we have been on a horror movie bent of late. The perpetrators have been monsters and humans, supernatural and too natural. I have thus decided (like the book on preparing for the Zombie apocalypse) have decided to generate a survival directive for surviving horror (movies).
1. Do not deviate from the original travel plan. This is typically how you are placed within a horror situation to begin with. As a corollary to this directive is that you must travel well armed. No, bullets may not slow spirits, but there are plenty of flesh causing horrors out there that will indeed bleed.
2. Once in horror situations, be prepared to use deadly force. I am not advocating first strike/pre-emption. But if you find the body (or blood stained suggestions of one) of a travel buddy, then all restraint against the use of deadly force should be suspended immediately. Naturally, if you are armed and are at risk of becoming the first victim of the group, by all means pre-empt.
3. Stick together. United you stand, divided you will die. Stragglers will be picked off. Do not investigate anything or anywhere on your own. Do not even go to the bathroom on your own. I recommend a minimum of 3 persons per activity. Say you are going to the bathroom. One person does the business, one keep an eye out in the room, one in the doorway (leave it open) and keep an eye out in the hall/outside. You should also keep 3 for each watch sleep. Teamwork is essential for survival. This would suggest that the size of your over all team should be six, grouped into threes.
4. Believe your friends. When your friend reports seeing something too crazy to be true, take it on face value as being true. No potential threat should be dismissed, every potential intel should be considered. Your enemy cannot be underestimated. Never assume your enemy follows the same code of behaviour as you do, adhere to the same moral code as most might. A corollary of this is that if you yourself saw something too crazy to believe you must tell others of it without fear of dismissal or ridicule. Distrust breaks down the team effectiveness and cohesiveness.
5. Have a plan for actions. Do not wait to be victims. Your plan of actions should be firstly security and ensure survival of the team. Your plan of actions should be secondly about escaping from the current horror situation. This has to be the order rather than the reverse. You will die without the team, there can be no escape alone. Note that all good plans require knowing what the sequence of actions will be (stepwise progression works best) as well as alternative options. No plans, regardless of how good, will be effective without buy-ins from the team. And the combination of action plans + team require defined role for each team members.
6. Have faith. Believing in a higher power/purpose may not save you from a lunatic, but it may against un-natural forces. Even against the mundane, having faith that you will survive provides a positive goal to enact and accomplish your plan of actions. Faith cannot be under-estimated. If you don't already believe, consider starting to believe (there are no atheist in foxholes). A corollary to this is that if you do not already believe, while others do, do not dismiss their faith, instead trust them, trust their faith (see #4 above).
7. Do not believe there is a traitor among you. Doing so will tear the team apart and doom you. If there is a traitor among you then you are doomed already, but no point speeding things up by breaking up your most important resource, your fellow team members. If the evidence become incontroversial that a person is a traitor, and some team members have already died from betrayal, eliminate the traitor. Use deadly force if necessary. Under no circumstances should you continue travel with the traitor as a captive. He/she will certainly seek to escape bondage while with you and cause harm to your team. While not the best of options, leaving the traitor behind bound and silenced may be an alternative. Know though that if found by your enemy, the traitor will certainly act against you. Why is having a traitor means you are likely doomed? Because the team has already been weakened and fractured by the traitor as well as the process of rooting out the traitor. However, you can at least take solace in the fact that nobody likes a traitor, and that in all likelihood the enemy will eliminate the traitor themselves once his/her usefulness has expired.