Getting better!! Emergency puzzle box was a good puzzle. Creating the obvious bow-arrow-rope combo doesn't work in the logical order (technically you'd attach the rope to the arrow first... really it should work in any possible order (i.e. bow+rope doesn't work)), but it is good to see item combination.
Final arrowhead combination puzzle is not really a puzzle (well it is if you guessed the combination: if you assume the first symbol is not in the solution, but every other symbol is, then there are only 24 combination to try...) and is a little annoying because it feels too much like deus ex machina - the answer is given to you, but its looks like some kind of an ancient combination stone wall - you think someone would have taken more effort to hide the combination! Maybe an ancient American Indian pictogram wall where you have to press the correct pictograms in the right order to cause part of the wall to crumble away would have felt more with the theme (especially if the player has to dust the rubble away!).
Really need the inventory to stay open - it's annoying when combining things or using items (I'm thinking arrowheads) repetitively - the inventory has a close handle - but because it closes when you select an item, there is never a need for it!!
I did get a little stuck on the metal bar... sometimes I forget to try the items picked up in a previous episodes :) I take that as a good thing - it means everything is not taken for granted.
It IS well done, and I wouldn't mind seeing more of these (wow - you've been busy!!).