I'll have to look at the "green slimes", make sure there's only 20. thanks! The portal and green gems aren't in the demo.
I'm happy that you like the game :) Finishing hard mode isn't easy.
As for the archeologist, that will be the last dungeon. There will be 4 dungeons with 3 sections in each. The demo only show 2 sections of 3 dungeons. I currently finished developing the first 3 dungeons and working on the last one.