The asset pack contains the source code and assets for all the tutorials listed here:
https://www.parallelrealities.co.uk/tutorials
So, that would be:
2D shoot 'em up tutorial
2D top-down shooter tutorial
2D platformer tutorial
2D adventure tutorial
2D vertical shoot 'em up tutorial
2D run and gun tutorial
Roguelike tutorial
Medals (Achievements) tutorial
2D turn based strategy tutorial
2D isometric game tutorial
Mission-based 2D shoot 'em up tutorial
Sprite atlas tutorial
Working with TTF fonts
Widget tutorial
Lookups
Map editor tutorial
They are all divided up into their individual parts, too.
A new tutorial is being added tomorrow, one that will show the reader how to create a simple Santa Claus game.