.. Getting Glottis' heart back

You could try to cut the heart off. Maybe with the scythe?

The web is really strong, indeed. Maybe you could rip it open more widely?

Look for some helping item.

Take one of the bones, from the ground. Throw the bone into the web.

Try the scythe second time. The heart should fly right off the web.

Pick up the heart and give it to Glottis.