7. Elurin (RUNE+LI)

Indeed!
 

FOLCRED: For him, a liquid and a fricative blend with sweet Italian!
ELROHIR: The Spanish pull the oars in this place, we hear. Now see him.
HALETH: He initially turns a machine for her.
???A???: Ugh, he dropped one! Slightly sibilant, and mildly unsettling!
ELURED: He enticed him, we hear (in slightly improper English).
HALDAR: Barnet youth loses one, but see him reform.
ELURIN: Ancient letter – elemental! Mix to find him.

It's HALETH, but it's H + LATHE (turned).

To drop one over here is to ... er ... release gas from ....

I think the remaining answers are Fastred and Haldad, but I can't figure out how they fit.

One of those is right.

'Dropped one' may only exist in British slang ....

Wait, is 3 Haleth (Hal + He + T)

I could only find 'drop a clanger', but it doesn't fit with Fastred.....

Sorry, I accidentally edited instead of quoting, so here it us again:

FOLCRED: For him, a liquid and a fricative blend with sweet Italian!
ELROHIR: The Spanish pull the oars in this place, we hear. Now see him.
HALETH: He initially turns a machine for her.
???A???: Ugh, he dropped one! Slightly sibilant, and mildly unsettling!
ELURED: He enticed him, we hear (in slightly improper English).
HALDAR: Barnet youth loses one, but see him reform.
ELURIN: Ancient letter – elemental! Mix to find him.

It's HALETH, but it's H + LATHE (turned = anagram indicator, but a lathe is also a turning machine).

To drop one over here is to ... er ... release gas from ....

Huey will know it. He has young children. :D

From rectum?

Generally, yes. (In a normal, healthy person). :)

Oh, I see. Fastred (Fart+Se+D)

Past tense.

Farted + s (slightly sibilant), and shaken up, but only a little, (mildly unsettling).

Hwaet! We have heard of Fastred the Flatulent
And Folcred the Fragrant, twins tenacious
In battle bravery.

(Often sung in Meduseld).

FOLCRED: For him, a liquid and a fricative blend with sweet Italian!
ELROHIR: The Spanish pull the oars in this place, we hear. Now see him.
HALETH: He initially turns a machine for her.
FASTRED: Ugh, he dropped one! Slightly sibilant, and mildly unsettling!
ELURED: He enticed him, we hear (in slightly improper English).
HALDAR: Barnet youth loses one, but see him reform.
ELURIN: Ancient letter – elemental! Mix to find him.

THEME: TWINS (FOUR PAIRS OF THEM!)

Over to Urwen!

Haha.

I am not sure what to do next.

We can't advise, or we'd know the answers. ;)

Just do what you feel like. :)

Yes, but too few of options meet this particular criteria I've chosen. X is one of them.

What if you modify your criteria, or go for a less strict theme/pattern?

For example, I really wanted to fit all of Feanor's sons and nothing else into a password, but it wasn't possible, so I made it all the sons plus Feanor and Nerdanel. I'm sure you can come up with another great password if you relax the criteria, as Galadriel suggested.

I finally made it! This one also has a theme.

1. Moody, with a direction? In confusion, he is revealed
2. He played one in endless queue (mixed up), and he lost it.
3. Rearrange the mythical monster for him
4. In the front, with direction? Mix it up for the fiery one
5. Initially, he is taking secretion, without end
6. Elemental destruction? Turn it around for him

Enjoy!

Bump
 

Just in case the new puzzle wasn't seen.

Seen, and trying, honest! :)

Modified one of the clues slightly
 

1. Moody, with a direction? In confusion, he is revealed
2. He played one in endless queue (mixed up), and he lost it.
3. Rearrange the mythical monster for him
4. In the front, with direction? Mix it up for the fiery one
5. Initially, he is taking secretion, without end
6. Elemental destruction? Turn it around for him

Is #4 FËANOR? ("Fore" + N for direction, but I can't account for the "a").

And is #3 ANGROD? (Anagram of "dragon").

It's AFORE+N, actually.

Nope, but you have the right idea.

1. Moody, with a direction? In confusion, he is revealed
2. He played one in endless queue (mixed up), and he lost it.
3. Rearrange the mythical monster for him
FEANOR: In the front, with direction? Mix it up for the fiery one
5. Initially, he is taking secretion, without end
6. Elemental destruction? Spin it for him

Hint for 2: [It] is a popular thing on the interwebz and even beyond, and if you think/talk about [it], you lose [it].

The term could also be used for cunning maneuvers, and this is the way [he] played (and lost) [it].

MAEGLIN? ("game" + "nil").

Oh yes ... LIN(E) for endless queue?

Indeed so
 

1. Moody, with a direction? In confusion, he is revealed
MAEGLIN: He played one in endless queue (mixed up), and he lost it.
3. Rearrange the mythical monster for him
FEANOR: In the front, with direction? Mix it up for the fiery one
5. Initially, he is taking secretion, without end
6. Elemental destruction? Spin it for him

Try figuring out the rest. It's easier than you think....

Hint for 3: Nerwen guessed the right creature, it's just that there are two characters in Tolkien Legendarium whose names are an anagram of 'dragon', and they're both from the first age. If it's not Angrod, it's......

ANDROG the outlaw.

1. Moody, with a direction? In confusion, he is revealed
MAEGLIN: He played one in endless queue (mixed up), and he lost it.
ANDROG: Rearrange the mythical monster for him
FEANOR: In the front, with direction? Mix it up for the fiery one
5. Initially, he is taking secretion, without end
6. Elemental destruction? Spin it for him

Some hints

For 1, find a synonym for 'moody'.
For 5, what do you secrete when you pee?
For 4, find a synonym for 'destruction'.

Maybe AMARIE for the password?

5. HURIN.

H (initial of HE) plus URIN(E).

Nope, 5 isn't Hurin ;)