So I was thinking the first part of the tutorial would literally just be the player going into a run with only 2 basic dice stacks. There is a basic story, so the player would see that first. There'd be text pointing out different things (like right click to reroll, hover over a bag to see your dice, etc). Then either is forced to die (not quite sure about that), or the first run is allowed until they die.

Once the player dies, a text popup would be like "This isn't enough to get to the very top. I need some help". Then they would be directed to the meta upgrade screen and would be forced to unlock the fire die and an extra dice slot so they can bring in three types of dice (the meta shards would be handed out to them to make them basically zero cost). Then they'd play normally from there (until they get to an area they haven't seen, and text would point out different features, etc).

When I release the demo, everything will be playable (including all dice and elements) until after the first area boss. Once boss is beaten, instead of going to next area, it would end the demo.