/vr/ - Retro Games

Ever played a game a long time ago but you just can't remember what it's called? This is the place to ask.

Starting off with the game I'm looking for
>gameboy game
>2 word title, with quest as the second word
>the picture on the cartridge had a sword, helmet and some other things on a green background
>played like a zelda game
>have to fight an ogre inside the entrance to a castle
>had to climb a really huge ladder near a waterfall to talk to an old guy
>had to fight a hydra
>pretty sure there was a merchant next to a rope and plank bridge
>secret rooms that had to opened with bombs
>Sort of oppressive atmosphere, music was generally slower paced and I just have an uneasy feeling when thinking back to it
I never did beat it, because I got stuck after the hydra because I had no idea what I was supposed to do afterwards.