This solution is best equipped to a built up world with all weapons available.
(This was done on
xbox one, results could vary on other consoles)
rubber banding your trigger is prolly the easiest and least effort way of racking up kills, but for those who wish to do it themselves, have a read.
NOTE--This solution works best with only one person being killed.
If killing multiple people, just go at it since you'll be moving around and making this solution void.
Extra Things you will need:
1) A Phone that has stopwatch on, Preferably with a lap button.
2) A weapon that one hit kills, preferably an iron sledgehammer.
how it works:1) Have the player being killed turn his controller off for his auto spawn to work.
2) Have your phone ready to start the stopwatch, this will be needed for the whole time, watch it carefully.
3) Stand in front of the player, aiming the curser at his head, Headshots are one hit kill, we want that always.
No one will be moving at all.4) As soon as you swing the Iron sledgehammer and it
HITS his head,
START the stopwatchNOTE:*The player re-spawn takes 16 seconds to work
**The sledgehammer swing is about 1 second.
***We will be aiming to press the trigger button to swing our sledgehammer every 16 seconds, using the lap button on the stopwatch to guide us.
6) When the timer gets to 16 seconds, click the attack button, swinging the sledgehammer, the player should have spawned by the time it hits the player, if this doesnt, re-adjust your timing a bit.
7) when the swung sledgehammer hits the players head, press LAP on the stopwatch at the exact same time.
Then repeat every 16 seconds
**You dont really need to watch the tv screen at all, just your stop watch, player spawns on 16 seconds which is when you press the attack button and then press lap upon hitting their head, the time lapped should be 17.10 or 17.29 seconds or something similar.
8) using the lap button can also keep track of how many kills you have, lap 35 means 35 kills unless you have some accidental laps, then it might be out of sync a bit.
*quoting
ifcJohn from his solution*
It takes around 20 secs for each kill and i.e. 3 kills per minutes, 180 kills per hours, so for all killing achievement, it will take 33 mins for 100 kills, 2 hrs 46 mins for 500 kills, around 14 hrs for 2500 kills.
This timing has now been altered with use of a stopwatch (Once you get into a good rhythm)
It is now:
4 kills per 1 minute 8 seconds.
40 kills per 11 mins 30 seconds.
50 kills every 14 mins 15 sec
100 kills per 28 mins 30 sec
105 kills per 30 mins 10 seconds
210 kills in 1 hour
500 kills in 2 hr 22 mins
2100 kills in 10 hours
2500 kills in 11 hrs 50 mins - 12 hours
You might not get these figures to start off with but with getting used to the spawning and swinging of the sledgehammer, you can pretty much get a kill every 17 seconds, give or take some milliseconds.
*I did get some issues from the actual game, i was killing the guy so fast, there was some lagging delays in respawning him, up to 5 seconds infact, then there are small lags in the game that add 1 second every now and then, plus the dashboarding every few hours.
I hope this helps people in the future, we can definitely see the improvement ourselves. Good luck everyone.