Except some hard puzzle, it's a good game. No music and it's probably better ...

I loved the atmosphere and the graphics.

Some few hints for the hardest ones (no spoil):

the grill puzzle : This one have two solution in it...

the clock : don't find a relation in the time... search elsewhere

the safe puzzle: search where the animals must be. The little yellow man give also the last clue

the compass on the table : check the letters, not the direction

the letters/inscription : there is a correlation