YOU SAID:
I have defeated many fearsome opponents
INTO JAPANESE
多くの恐ろしい敵を撃破しました
BACK INTO ENGLISH
I have defeated many enemies
INTO JAPANESE
多くの敵を撃破しました
BACK INTO ENGLISH
I have defeated the enemy many
INTO JAPANESE
多くの敵を撃破しました
BACK INTO ENGLISH
I have defeated the enemy many
That didn't even make that much sense in English.