Ring of Pain

The easiest method for this achievement and the one I used.



Note*: Stat boosts from scroll and jars do not count against this achievement, meaning you can use jars and scroll to pad stats and still unlock the achievement.

For this method, use the selection candle set to Brute item set only. This will allow you maximum chance to obtain the item mentioned above in the spoiler. Try to get this item early on because utilizing it even with grey rarity items will quickly lead to massive stat numbers. Don't forget you can also quit out and re-enter the game to reset each dungeon one time (unless you are able to handle the Time Weaver) if you make a mistake. You will easily be able to kill Owl in reprieve and dark ending using this method without utilizing and stat boosts and can be easily combined with not killing any scroungers as well.

If you want an even easier boost. Do not combine this achievement with "Scrounger Appreciation" and you will have much more healing and stats for the run.