Part 1: The Solved Grid
The solved grid is below:
The logic for the left side portions was relatively straightforward. There were no particularly difficult steps - just searching for the next place progress can be made, like solving a jigsaw puzzle.
A few sections had extra information that seems important:
Part 2: The Messages
Partial: Criss Cross and Three to one solved
(There are three letters missing to the right of ‘Three to one’ that I can’t yet place without solving the bottom right area)
Three to one:
However I know that Deus has all four parts and is looking at the next steps so I expect this to become obsolete :) Still very fun to solve!!!
Edit: congrats ...