Riddle for Reward -Ended

Here's my go for a first letter riddle Before I start, I'm not advertising anything, this is just something I want to do and whoever solves the final answer, wins. The reward? A copy of "The Taken King." So, after solving all nine riddles, the word is not the final final answer, but researching the word will lead you to an objective. At this objective, look at every single aspect of it. If you think you've figured it out, private message me if you don't want anybody else knowing, or write it down below. The final answer is a simple message you see sometimes. But, here's the real kicker, it needs to be followed by another number found at the objective. Plot twist: This word is not in the English language but it does have to do with the number 9 (9 is not involved in the final answer) So, without any more delays, here they are; 1. For every action there is an equal and opposite reaction. I allow you to constantly come back in the fight, but will you see one of me or two? Not many can utilize my power, but for those who can, they will always live a booming life. Solved by SleepingFate [spoiler]Nothing Manacles[/spoiler] 2. Industrial. I am not seen very often, but when I am, it's a good chance you don't have me. I cannot be destroyed by the enemy, Guardian, but you can destroy me with ease. Take care of me, and I will give you power. Solved by schoolhater51 [spoiler]Heavy Pike[/spoiler] 3. Lost. Forgotten. For those who remember me, you must remember a swiftly fought battle. I blocked your exit, Guardian, but even if you could not defeat me, I would have been killed by an intervention. I was the first taste of battle, and the final taste of one. Solved by JPZombieKill [spoiler]Rahn, Devil Captain[/spoiler] 4. A powerful push that drives the enemy away. Fight with the arc and take to the skies. When the enemy sees what I have done for you, they will surely be afraid of what might happen next. Hint: I lift up your chances of success, but without proper usage, your fate has surely been sealed. Solved by Americabros1 [spoiler]Lift[/spoiler] 5. One good hit and you shall live. Two good hits and you will surely die. Whether I'm up close or far back, you cannot escape my offerings I am not thorn. Solved by SleepingFate [spoiler]Magnetic Grenade[/spoiler] 6. Are my trees fruitful or bare? I have untold riches to offer Guardian, but my ancient treasures are lost to time and enemy threats. Fight to reclaim what I have, Guardian. Defend what is here, and riches beyond imagination are yours. Solved by TwsitedMemory91 [spoiler]Ishtar Sink[/spoiler] 7. By a window, I am always disregarded. You might stop by me, but no matter what you will leave. I have brothers just like me, and I have brothers made for protecting. I am always learning, and I have learned that I am neglected. Solved by TwistedMemory91 [spoiler]Frames[/spoiler] 8. 2 daughters and 2 bombs cannot stop you from overcoming my will. I will try to deny your passage, but by the time I am done, I will rest easy knowing that one of you should be dead. Solved by Mr Gilkes [spoiler]Ir Yut, Deathsinger[/spoiler] 9. At the end of your longest journey, I cannot be denied of my immense power, but you can deny me of life. I will always remain in your way because you cannot destroy the darkness of the machines unless you have surpassed me. I am your journey. I am not the black garden. Solved by schoolhater51 [spoiler]Eye of a Gatelord[/spoiler] 1. Nothing Manacles 2. Heavy Pike 3. Rahn, Devil Captain 4. Lift 5. Magnetic Grenade 6. Ishtar Sink 7. Frames 8. Ir Yut, Deathsinger 9. Eye of a Gatelord Final Answer:Niflheimr, Solved by Mr Gilkes FINAL Final Answer: Error 404, answer not found. -11, solved by Robert Alonso. SERIOUSLY READ: If you google "Niflheimr", the second link is a youtube video. The video lasts 4:04 which translates to an extremely common error code. The artist of the song is named "XI", translating to 11 from roman numerals. (If anyone had just said "error 404 11" that would have been good enough. I really hope you guys find these hard because that'll make me feel better knowing that I put up a challenge (or just can't riddle at all). THE FINAL HINT: The answer has nothing to do with nordic beliefs