Hi there and thank you for playing.
Here is a hint:
1 - Sagittarius: In the library it says: THE ARCHER.
You can make an arrow by downgrading paper, then downgrade wood, to turn into a stick.
Mix stick with stick, get Fire.
Set up fire on the elemental room. This will bring light to the dark floor.
Save 1 stick for the next day
2. Collect stone
Mix stone with stone > ITEM!!!!
Mix that ITEM with a stick, you should guess the results, i think it's a good offering.
For Aquarius, you should collect water to open that level.
ASHES + SAND > new item + FIRE > collector.
Practically all items on game could be made from ROCK, PAPER or SCISSORS.
Hope this helps.