Aggressive openings?

Hello, I am looking forward to play an amateur tournament. I am aiming for high places, but one of the favourites is higher rated and much more experienced than me. Fortunately, this person has a playing flaw: this person cannot stand attacking positions and sometimes misses my attacking plans. Therefore I want to prep some aggressive openings and asking the Lichess community for help.

1. For Black: Do you know some aggressive openings for Black against 1. e4 and d4? I would like to keep it not too hard, so Sicilian is unfortunately not an option for me :(
2. For White: I recently started playing Evans Gambit, but almost everyone plays 3... Nf6 (and not 3... Bc5). Are there any aggressive ideas there, except for Ng5?
   If you have some suggestions for another sharp openings, I will also be glad! Thanks!

agressive opening for black is something you cannot force. Whites extra move means that white has better chance to dictate style of game in the early phases. againts e4 e5 is most aggressive. and there are black gambit from this but usually not very good
like Schliemann Defence, e4 e5, nf3 nc6, Bb5, f5 againt spanish
or Rousseau Gambit with only difference is place of the bishop in c4 instead b5
Both have traps and can lead horrid tactics. but W is clearly better in both

For white, Scotch Gambit. For black, Stafford Gambit.
These are openings that are very likely to happen, since they can be played 4 moves into the most common continuations. In low-rated tournaments the players will very likely fall for one of the traps in the openings, and even if they don't they are unlikely to find the best continuation which still leads to a playable game at that level.

Against e4 you can play the Polerio:

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nf3 e4 10. Ne5 Bc5 11. O-O Qd4 12. Ng4 Bxg4 13. Bxg4 e3 14. Bf3 exf2+ 15. Kh1 h5 16. c3 Qd6 17. d4 Ng4 18. g3 h4

2. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Nd5 9. Nf3 Bd6 10. O-O Nf4 11. Nc3 Nxd3 12. cxd3

3. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 b5 6. Bf1 Nxd5 7. Bxb5 Bb7

Against d4 as black there isn't really anything aggressive, just the Englund gambit, which is unsound. You can try g6 with c5 tho.

For white play the normal Italian with an early c3 d4 break. Most players fall for easy traps and the Italian is sound. You might have to deal with the Polerio after Ng5 too, which is why you should, if you play it, study a way for white to deal with blacks ideas listed above too. But don't worry: Most players don't play it correctly.

Take your opponents e pawn and insert it into his right nostril. Slap him hard around the left ear with your open right hand, then sit down and say "your move".

That is a really aggressive opening.

@petri999 said in #2:

againts e4 e5 is most aggressive.

False. 1.e4 e5 maintains central parity and is therefore solid.

@crtex said in #3:

For white, Scotch Gambit. For black, Stafford Gambit.

The Scotch Gambit is that legendary opening that you might have heard rumors about as being even more insipid than the London System. And the Stafford Gambit has been refuted, Black will end up much worse if White knows to defend his e-pawn with d2-d3 so that he has the c2-c3 + d3-34 + e4-e5 pawn storm. Neither are suitable for OP's needs.

@chess_enjoyer00

I recommend you play the Danish Gambit with White (1.e4 e5 2.d4!? exd4 3.c3!? dxc3 4.Nxc3!). If you play 4.Nxc3 you can avoid the Schlechter Defense which the opponent might have prepared.

As for a defense to 1.e4, you might consider the Pirc or Modern defenses. Note that these are defenses that attack the opponent's center rather than his king. If you have to attack the opponent's king, then the Latvian Gambit or Elephant Gambit might be your best bet even though they are not objectively sound. Against 1.d4 a Benoni-based defense like the Benko Gambit might be worth looking at.

Well, I tailored my recommendations to OP's rating, as well as someone who weren't good at defending. So I think both openings work at that level.
Stafford isn't sound but it leads to a lot of tactical chances for black, and someone who is bad at defending can mess up. The Scotch is completely fine, and usually leads to attacking games.
If the opponent is really that bad at defending they can't be a very high rated player, so you don't need master level solid openings against them

Maybe try A Startling Chess Opening Repertoire – New Edition by IM Baker and FM Burgess
http://www.gambitbooks.com/pdfs/A_Startling_Chess_Opening_Repertoire.pdf

@crtex

The Scotch GAME is aggressive and interesting but probably requires too much work to use as a one-off, which seems to be OP's request. The Scotch GAMBIT is easy to learn but is extremely dull.

Yes it is true that the openings do not need to be master-strength, but it would be a bad idea to play an opening that has a clear refutation. White only has to know a little bit of theory before Black completely runs out of play in the Stafford, and the Stafford is popular enough that 1.e4 players are incentivized to learn it. There is also the issue of White declining the gambit (4.Nf3!?) or even side-stepping it (3.Nc3, 3.d4, &c.) in which case OP would need to know how to play a Petroff. For a one-off opening that makes things even dicier.

The Elephant Gambit also scores well at club level while being a dubious opening, but the refutation is less clear: Black can still have some practical chances. And it is not as easy for White to see what is coming and side-step it.

I hear Simon Williams Black Lion is an aggressive opening for black, though it's not exactly sound...