I mentioned this book during the Signs of the Hour / Day of Judgment lectures.
It’s pretty exhaustive. However, there are quite a few weak ahadeeth. Still, it’s an excellent resource on the Day of Judgment.
Also, as Imam Ibn Kathir is one of the great mufassiroon (tafseer scholars), he offers a detailed explanation of the various Quranic ayaat and ahadeeth in the book.
You can download the book here.