Today I tried out
The Cheat Engine, which has a plugin/table for
AC Odyssey.
I have never used it before. But it worked pretty easily. It is a memory hack. So you start your game, then Alt + Tab back to your desktop and start the Cheat Engine. Then you click on the Select Process To Open button and pick out the game. Then you click on the button right next to that to load the table above.
From there you can edit some things in your game. You can add some item packs, but it looks like not every individual item. I think most of these are micro-dlcs they want you to pay for. You can also edit your crafting supplies to give you however many you want. I used it to give myself more shards of the Spear of Leonidas, and more leather (since I do not like killing animals to get it).
If you want to add multiple items like the shard pieces, you can just click on the box for it, then unclick it, and click it again. As many times as the amount you want.
As this automatically updates the game as it is running, you don't save anything in the Cheat Engine interface. You can just turn it off when you are done. The changes you make will be saved when you save you game as normal.
The reason I was looking for this is tied into how the abilities work. Many of them are capped by the current level of the Spear of Leonidas. It is really just the broken off head of the spear, which you use as an offhand dagger. The only way to upgrade the spear, is to go along the main quest and find and kill Cultists. The Cult of Kosmos are the arch bad guys in the story. They are a secretive cabal manipulating the Greek World from behind the scenes, and it is implied that they engineered the Peloponnesian War, which is taking place during the game. Each Cultist has a shard which you can use to upgrade the spear.
I really found this process clunky. It is a mostly open-world game. You can travel anywhere you want. But each region does have a minimum level listed for it. That is the minimum level of all the foes in the area. So you don't want to go to the places above your current character level. It lists all these on the in game map, which is nice. So unlike Fallout New Vegas the game won't just kill you if you try to walk straight north to Vegas when you start. It at least warns you that you will be in over your head.
But as I was just exploring the open world, I was lagging behind in the main quest. Because I was not searching for Cultists. So I have been getting to points where I had ability points I could not spend, because I had not upgraded the spear high enough. This is why I looked into the Cheat Engine and the Inventory Editor table above. It allowed me to upgrade the spear and spend all those points I could not use, and keep exploring the world at my leisure.