Ducki's Descent

Yaharr ye scallywags!
I’ll be honest. Losing Ducki down a well was not me finest moment as a captain. But I’m not leaving without him.
The trouble is, this is no ordinary well. It leads into a huge underground world filled with old ruins, overgrown forests, frozen caverns, scorching deserts, abandoned factories, lots and lots of lava, and things with far too many teeth.
To reach the bottom, I’ll need to jump, swim, climb, and fight my way through whatever is waiting down there. Along the way, I can find new gear that lets me double-jump, scale walls, dash through the air, and put an ancient cutlass to good use.
There are doubloons to collect, treasure chests to find, keys to hunt down, and strange flowers that might help keep me alive.  There might not be a need to fight any of the locals at all if I play it right though.  If I pay attention, I may find a friendlier way through some of the trouble.
Plenty of powerful creatures rule the depths, though, and they won’t all be happy to see me. Getting past them will take quick thinking, good timing, and perhaps a little luck.
Finding Ducki is only half the journey. Even if I make it all the way down there, one question remains.
Will we be able to make it out alive?
So, what do you say? Help me bring Ducki home.