I continue my journey in the pyramid for now and this is getting really hard - both fights/riddles wise. This huge as well (wasn't expected this), like almost a mini-mod.
I've managed to grab few tomb keys by resolving few riddles (the range, neverending passage..) - there are two rooms, each ot them with 4 alcoves but i have no clue what the hell i should put there

Anyway, I think the tomb keys are not mandatory (it's only to get parts of the crystal armor? but there's also this locked door which says 'way of the crystal warrior'.. so i'm not sure).
Word of command - i opened one gate but not the one I wanted
snake - it only opens the 2nd door; missing the word for the first one
Accept the gift of the serpent - EDIT: found, you get some rewards.
Finally, found a crystal healing (hurrraayyy

) but i think you should make it available sooner - even the spiders are really tough/resistant. EDIT: actually divides itself in 2 crystal shard healing
Otherwise, your mod is truly excellent - hopefully 1.6 will be there in a short time !