Yes but fire can beat rock depending on your level.
going into the cave
stick, rock thingy, when you get to target, tv
pantek
Balance the bridge ontop of the rock
If you mean unlocking more things, beat the level before it or Act I of the story above it.
You'll need to play story mode as an Alien. When in the level "The Mothership" you'll need to destroy these purple bunches of rock on the walls with your laser beam. After you destroy them complete the level. After the level there should be a level on the mothership that's called "Varan". Play the level and beat Varan and afterwards he should be available to buy at the store.
I can almost answer it the bottom ones a rock star.
Yes once you beat the level Shadow's story is unlocked.
To reach level 9 story in Destiny, you must complete the "The Dark Within" mission, which is part of the Moon storyline. This mission becomes available after you finish the initial missions on Earth and the Cosmodrome. After completing "The Dark Within," you'll be able to progress to level 9 story content.
Beat paper with scissors beat rock with paper, or beat scissors with rock
No, you can play Dawngaurd anytime durig the story. Its is recommended that your character is level 10 or above to play the Dawngaurd story, but it is not a requirement.