Castle Master 2 - The Crypt

Hint:
——-
It is very important to keep your strength up in this game. You must
be as efficient as possible in your actions, as there is very
little spare food lying about. You dont have to kill all the
spirits to escape. There is no way out if you fall to the bottom of
the ravine. As a guide, you will find listed the number of spirits
you should have killed, the number of keys you should have and
your ideal strength rating at the end of each section of the
solution which follows. This solution assumes, unless otherwise
stated, that you eat all food as you find it, pick up all
treasure and kill every spirit you see. Always crawl on ledges,
etc. You can move more accurately.  Look down at your feet when
walking near to the limit of a ledge, etc.