Longest Path - collecting all collectibles

The images below show the longest route the character will have to take to collect all collectibles.  The areas that are shaded are the blocked off areas where the character cannot go.  Limiting the areas where the character can be trapped to make the first level more simpler than being too complex. Otherwise it may bore the player when playing as they keep getting trapped. 

SW Face 1 

HG Face 2

RH Face 3 

MF Face 4

R Face 5

BR Face 6