There was this glitch one morning that I versed abbadon and killed him. I went to the map and I could verse him again. I versed him so many times that I got from level 32 to level 36. I got the abbadon shield and sword and I got enough gems to buy the angry Felix. This was a awesome glitch I wish it would happen again. P.s. It did not work about five times that I had everything.
Easy abaddon/lucifer farm
If you are strong, to farm abaddon and lucifer, fight them both then go into your setting > general > time and date > set time and date > then change the date to one day head. Hope this helps!!
The flinch kill - Abbadon and Lucifer
When lucifer or abbadon miss you, they will stop attacking. Meaning a sort of hit-and-run tactic can be used in which you hit one side and run to the other before his attack animation is completed. This gives you approximately enough time to do two attacks before he will swing again. Simply run back to the first side and repeat. Doing this I easily defeat abbadon with only snipers and taking absolutely no damage at all. This can be used against lucifer but is much harder due to his attack animation being much faster than abbadon. This isn't always the fastest way to kill them as you sacrifice every 3rd hit for running to the other side but it's certainly the safest, death free way and the easiest way to solo lucifer at a very low level.
Time glitch
You can use the time glitch by going to settings and changing it to the next day and you will get rewarded with gems and gold on the fifth day you get 25000 gold and five gems. Just keep doing that and you can get lots of money.
Treasure chest glitch
Unlimited stuff in treasure chest just keep pressing on the item you get except for the demon.
Unlimited daily bonus
If you are on day 5 of the daily bonus then go into settings and set the day up one and collect the daily bouns and keep donig that for unlimited gold and gems.
Abbadon needs no rest...