[Dawn]

This post actually surprised me in that they didn't encrypt anything by the looks of it.

Regardless, 9,999 Essence/Talent points isn't enough to get everything there is to get.
As he said in the video, if you try to add a byte it'll corrupt the save.
Mod it to 9,999, load the game and kill someone, then mod it again.
The game will have added another byte for that fifth digit.
This means you can have more than just the 9,999 added in the video.

Common sense on XMB, I'd hope, but still worth mentioning for new folk.