Use Traps. Seriously, Use Em
You get soul points.. use em! Near the end of the game I've found myself with sometimes over 2000 souls. That's cause no one spent them!
The jump and push traps are very effective. The sand trap trap can force people to eat blue in the end. Bots have no clue how to deal with them.
They don't affect zombies.. just keep that in mind.
Don't Let Your Gun Stick Through a Wall or Door
The game will let you do this and it you will look silly... and get shot. Zip it up and keep your tool out-of-sight.
If the Rule You Followed Brought You to This, of What Use Was the Rule?
All rules can be thrown out the door if the situation warrants it. Learn to ditch the rules when you need to. The defining quality of a battle royale game its ever changing conditions you have to adapt to.
If the rule you are following will get you killed in a particular situation: don't follow that rule.