The description of the Overkill achievement says you need to deal at least 8 hearts of damage to get it, but you only get it if you deal at least 9 hearts.
Steps to Reproduce:
1. You have to have the Enchanter achievement, but not Overkill. You can use this command to get Enchanter:
/achievement give achievement.enchantments2. Give yourself a sword that deals 8 hearts with this command (you have to use a command block, it doesn't fit in the chat):
/give @p minecraft:diamond_sword 1 0 {AttributeModifiers:[{AttributeName:generic.attackDamage,Name:dfjkcn,Amount:15,Operation:0,UUIDMost:564,UUIDLeast:9329}]}3. Spawn a spider (which has 8 hearts) and hit it. You will kill it, but you won't get the achievement.
4. Use this command to give yourself a sword that deals 9 hearts:
/give @p minecraft:diamond_sword 1 0 {AttributeModifiers:[{AttributeName:generic.attackDamage,Name:dfjkcn,Amount:17,Operation:0,UUIDMost:564,UUIDLeast:9329}]}5. Spawn another spider and kill it. You will get the achievement this time.
Comments 10
@unknown: No, the sword adds 7.5 hearts to your fist damage, which is 0.5 hearts. If the total damage was 7.5 hearts, the spider wouldn't die the first time.
Issue moved to Crowdin.
Fixed at Crowdin in English (UK), English (CA) and English (Australia). Changes will take effect in-game soon.
This is no bug, the sword is actually dealing 7.5 hearts of damage since "Operation:0" sets your total attack damage (not including strenght potion effects, etc.) to "Amount:15",
to fix this replace 15 with 16.