Thank you for your very kind words, we're glad you like it.
So the obelisk in the town as no function, but the dungeon door requires you to explore, find all the chests which contain healing potions, wood and stone, bring them to the knight on the right and he gives you a key. Apologies for zero explanation, we wanted to add dialogue but ran out of time. Also with the goblins you can pretty much ignore them and dash twice to escape their pursuit.
Hope this helps, and thank you so much for playing <3