Agressive Opening Against 1. e4 as Black

ghostofmaroczy, your example is horrible. It has multiple issues with it:
1) White is not forced to play 3.c4. 3.d4 is a lot stronger, and is why almost nobody at the top levels plays 2...Nf6 any more and they all play 2...Qxd5.
2) If White does play 3.c4, and transposes directly to the Panov-Botvinnik Attack, 6.cxd5 is weak. White has two FAR BETTER options that Black must know a TON of theory on. 6.Nf3, leading to an endgame that is highly theoretical, and 6.Bg5, which leads to a ton of wild tactics.
While it may look daunting, I would recommend 1...e5! Once you learn the other lines, you'll realize how easy it is to defend if White doesn't go Ruy Lopez. That leaves the Ruy as your main point of study.
The Danish, King's Gambit, Center Game, and Bishop's Opening are all a complete joke.
The Vienna doesn't take long to learn how to equalize pretty easily.
That leaves 2.Nf3 for White. I personally play the Petroff, but if you are a 2...Nc6 player, the Italian Game is no biggie for White. The Two Knights, Hungarian Defense, and Guioco Piano are all good options for Black. The Scotch and the Four Knights (or attempt at it) you can group together and play an old favorite of mine, the Three Knights Game, which can come via 1.e4 e5 2.Nf3 Nc6 3.Nc3 g6 4.d4 exd4 5.Nxd4 Bg7 or 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 (4.Bc4 Nf6 and you are back in the Two Knights Game, which is dead equal with correct play) g6 5.Nc3 (White has nothing better) Bg7 transposing back to the Three Knights Game.
All of this stuff can be covered in a couple of days work. The main thing you have to spend your time on is whatever line of the Ruy Lopez you decide to play (or in my case, the Petroff - With the Petroff, you kinda have to play the Four Knights Game as the Three Knights isn't available with the wrong knight developed).

I most often play the Latvian Gambit (1.e4 e5 2.Nf3 f5) or the Elephant Gambit (1.e4 e5 2.Nf3 d5). Lately I'm exploring the Traxler Counterattack. (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 Bc5). All three are agressive, tactical and lots of fun, but be aware that they are slighly dubious if not unsound.

Don't forget to have something handy against the Four Knights:
Dude white practically wins after .....Ne7? Bxf6.

Don't forget to have something handy against the Four Knights:
Dude white practically wins after .....Ne7? Bxf6.
WRONG! 7...Ne7 is one of Black's 2 main ideas. Doubled f-pawns does not equate to losing. Try studying the Spanish Four Knights, Symmetrical Variation before you make such shallow-minded, ignorant, incorrect statements! All you do is make a fool of yourself!

Alright, hello all! I've been trying to get my main openings sorted out, and I ran into a problem: I hate playing against e4. I want to avoid all of the theory in the Sicilian, and a lot of the ...e5 opening have the same issue (Ruy Lopez, Italian Game...).
So basically, what aggressive opening should I bring against e4? For reference, I play the King's Gambit (on white) or the Nimzo-Indian (black against d4).

Don't forget to have something handy against the Four Knights:
Dude white practically wins after .....Ne7? Bxf6.
WRONG! 7...Ne7 is one of Black's 2 main ideas. Doubled f-pawns does not equate to losing. Try studying the Spanish Four Knights, Symmetrical Variation before you make such shallow-minded, ignorant, incorrect statements! All you do is make a fool of yourself!
Yeah, stop being a hypocrite and making, what did you call it? Shallow minded, incorrect statements? Yeah, only people like you know how to argue like that by using insults. White brings his Q out and sends all his Kside pawns down.

Play the Petroff. Simple solution.
It kicks in early, on move #2. The tactics are bit wild and the theory is a bit large -- but not when compared to double e-pawn openings, Sicilian, or Ruy Lopez.

First off, I wouldn't play 9...Ng6, though it would PROBABLY transpose as I would play it the following move. In your example, after 10.Nf5, NO WAY that I play something stupid like 10...Re8? I would play 10...c6!
That said, I would play 9...c6! BEFORE I move the Knight to g6.

And actually, I should say that whether or not I play Ng6 on move 10 actually does depend on your move. If you go 10.Ba4, then yes, I go 10...Ng6. If you go 10.Bc4, I don't!
YOUR TURN:

Play the Russian/Petroff,either the game will rapidly devolve into a drawn K+R +p(s) ending,or it will become a choatic slugfest where black has as good as a chance for a win as white.

First off, I wouldn't play 9...Ng6, though it would PROBABLY transpose as I would play it the following move. In your example, after 10.Nf5, NO WAY that I play something stupid like 10...Re8? I would play 10...c6!
That said, I would play 9...c6! BEFORE I move the Knight to g6.
Ok, so you want to lose 3 pawns to fend an attack? Ok, sure.
Alright, hello all! I've been trying to get my main openings sorted out, and I ran into a problem: I hate playing against e4. I want to avoid all of the theory in the Sicilian, and a lot of the ...e5 opening have the same issue (Ruy Lopez, Italian Game...).
So basically, what aggressive opening should I bring against e4? For reference, I play the King's Gambit (on white) or the Nimzo-Indian (black against d4).