First of all, I am assuming you are in a neutral base, so do the quests. While you are looking for first aid kits, loot everything you can - clothes, food, water and some weapons. Plus, if you kill the wolf, quickly use the medications and then butcher the corpse for meat with a knife.
Ultimately, you should have pants, a shirt or jacket, weapons, food, water, and plenty of medicine.
If you complete all the quests leading to the swamp, you will receive the necessary items to craft a homemade rifle. Go to the crafting panel and place the throwing bolt, duct tape, board, and metal pipe there.
If you are planning on killing a bear with a homemade rifle or pistol, think again. The bear is faster than you and can do a lot of damage.
Beware of NPCs that can kill you. If you are not sure if they will kill you or not, move the mouse pointer over the NPC, and if it is green, then friendly, and if red, then enemy. Usually military NPCs spawn in Gorshovo, so keep an eye on whoever is near you. Always use shelters and cars / trucks that will increase your chances of survival. If you manage to kill the military, you will be rewarded with military weapons and clothing
Beware of the marauders who can sometimes appear at the gas station in Kvashino and nearby towns near their base.
I know it sounds strange, but if you want to know if anyone is around, listen to the music. If it changed to combat / dangerous, then there is someone nearby who can kill you. There have been many times when I heard that the music changed and then bumped into a player, wild animals or NPCs.
Sometimes it is not wise to use a full-fledged first aid kit right in the middle of a firefight, as it will take a long time. Better to use bandages and pain relievers, or anything that stops bleeding.
