Tips:

Tip 1:
If you happen to be eqiped with a two digit IQ, theres nothing in the way of using the built-in HINT- function that is in the game.

Tip 2:
Dont be afraid of choosing Hard Combat ? it´s actually not very "Hard".

Tip 3:
If you have problems getting on to the next level, it might just be that you have to talk to some of the other characters? often even be in a specific order.