It's a fun Lego system.
The set is from a smoke-free and pet-free home. There is no box. The instruction manual is in very good condition.
There are some substitutions and some missing pieces.
The substitutions are: 2 light gray slopes for dark gray for Step 13  Part#4460a
                                     
                                     2 white modified 1x1 brick headlight for red  Step 18  part#4070
                                      1 red tap for a blue tap #4599a for step 12 of ship
                                      a different 1x2 tile for the instrument display for the ship's engine   step 7 part #3069px23
                                     2 blue tinted windshields vs clear for the ship's pilot area   step 12  part #4865
                                      a substitute sword
                                      Dr Kilroy has a hard hat instead of a pith helmet
Missing are: 1 black and 1 red snake part 30115, the red feathers for the spear(part 471), the chrome sundial (part x276), 
                     the sextant(part 30154), 2 gray pistols(part 30132) 2 gray rifles( part 30141), the cape for Achu, the backpack for Rudo Villano.
The pick and the magnifier have rust on them - see photos.    The rope on the mast is constructed using black round 1x1 plates and string.