You ironically fall into the well, with no way to get out. You, of course try digging out from under, but only to find that a Tungsten plate is below, all you have is a rope, a rock, and one liquid of any choice. What will you do? (The lid is sealed shut and you can't climb out)
As a liquid, I'd take
30% hydrogen peroxide, as this will dissolve the tungsten just fine.
Provided I'm still alive after that,
I'd use the stone to
crumble the tungsten oxide, since I have no clue how aggressive that stuff is to skin.
And with the rope I'd
knot a hangman's noose before I start, just in case in all my chemical ignorance I'll produce a living hell by pouring hydrogen peroxide on a tungsten plate in such a confined space.
Well, I'd probably ponder somewhat more on the problem before trying the luck of the clueless. But let's say that's what I'd do. Please enlighten me about what fate I've chosen for the virtual well dwelling me.
Wrap one end of the rope around the stone,
then immerse the stone in some adhesive like mseal or feviquick or something that could stick stone to other material
then throw the stone outside the well and wait for sometime till it sticks to something,
then climb the well using rope
I am not sure if this will work, but suggestions are welcome