谁能为我翻译

If I can not become the angel who saves this world ,
如果我不能成为拯救这个世界的天使,

Then let me become the devil of destroying this world
那么就让我成为毁灭这个世界的恶魔.

The former has already failed
前者已经失败了

Now my ability is still very tiny
我现在的能力还很渺小

I must become formidable
我一定要变得强大

To complete enterprise which Hitler has not completed!
完成希特勒没有完成的事业!

这好象是一个游戏里的对白.
九州MIMASAKA和xiaoyi0663的第三,四,五句翻译错了:

The former have failed里面的have改为:has

I now capacity is still very insignificant改为:Now my capacity is still very insignificant

Hitler did not complete the completion of the cause!这句顺序颠倒了,应改为:To complete the cause Hitler hasn't completed!

You are ill

If I can't save the world as an angel,
Then let me into this world to destroy the demon.
The former have failed
I now capacity is still very insignificant
I must become powerful
Hitler