Marines
#1 First thing you do is look for items quickly even use stim to run quickly no one will just judge you instantly inless theyre gamethrowers. Try to find any items you can if you find the flamethrower its a good idea to take it, but once you do go straight to the middle and join a group because your a target to the thing and even allies
#2 After searching for items always head straight for the middle, if there is anyone around you its always better to be with someone because youre less likely to be judged and you have support if there is a gun fight, also a bonus with having a team is the fact that when you have more people with you you're less likely to get shot by another group and its easier to intergrate
#3 When you've joined a group watch carefully always try to memorize who dies (their colour), who shoots first, who is always running in front or falling behind, who shoots first and one major give away is to watch who dissapears for a bit of time. These are some of the factors that you need to pay attention to in every game for determining who the thing is.
#4 A) If you have a group and you know that none of you are the thing one strategy is to sit in the middle and wait for the thing if he knows that hes been found out he will try to join the group as a different colour most likely. Either that or he will hide so the best thing to do is sit and wait for a few minutes in the middle before going anywhere.
B) If the thing is unknown and youve looked for other people but found none either the thing is being lame and keeps running or your the only ones left. If you think the thing is still out there or know forsure that he isnt there then the best way is to try and lure him in. If you have both radios you could move out and try dropping one somewhere to let the thing get it or have one person go out by himself then to run back to the group. If one person does leave make sure that you have a password with them to know if he was killed, also have it so that once he comes back he must say it right away or else you will shoot him. This provides no time for the thing to escape when you ask for a password that he doesnt know. I recommend that if you use a password always use your SC2 name.
If you dont find the thing do what we always do choose your most likely subjects with someone that you think will back you up and shoot them all in order from who you suspect most to the least.
#5 Directly relating to #4 be aware always of the thing, if the thing is smart he will try and lure you out he will show himself in marine form most likely then when you stim forward he will lock the door run in while your crossing it and then transform and kill you. This is a common strategy that they use to be able to kill you off so make sure that you stay in a close group so that you dont rush ahead and die.
#6 Also relating to #4 i said to use your name as a password. This is a great advantage to you in the long run if you can become recognizable as someone who always plays as a marine and wins then in later games if people recognize you then it gives you a great advantage having people following you. Also you can even use your name by announcing it and asking people for theirs it just gains trust and its good strategy and also makes it less likely that you will be killed of first. (this really only works well if you always play as a marine, although a similar strategy can be used in any game to your advantage as a marine or the thing)
#7
Going back to being in a group whenever your in one you can either lead or follow. If you lead it puts you in the hot seat you can either fail horifically and get shot or you can have several people at your command. You could also follow the group if you do follow its usually best to be only one or two spots behind the leader so that you cant be left behind the thing cant rush and attack you first from the front or behind and it allows you to have several people behind you if you get locked out behind the front people. When in a group also always be aware of a bad leader this person may not really be the thing but is just terrible at leading they always stop moving and turn around or go in useless circles in one area if a person like that is leading break off and take over.
#8
Last off when exploring you should almost never go into rape room and if you do it must either be only one person going in while all the others stand on the door or so that all of you go in together, but if you all do go in together be careful because the thing might be in the back of the train and might split off lock you in and kill the others and only enter together if there is atleast 5 of you in the train. Also when exploring try taking different routes and not just going in a circle and always check back in with the middle.
I think thats all for now i might update it later, but its not too bad
~EternalToss~