No, You can't get the TF2 Black Rose knife anymore. Here's why:

Way too many people keep asking about the same thing. It's NOT possible, and this "guide" will hopefully make you understand why.

The Black Rose

You can not get the Black Rose knife for TF2 anymore

There are a few reasons for this:

1. Because this game's servers were shut-down, the game got unlisted from the Steam Store. It cannot be purchased or added to your account. Only people who added it to their accounts before it has shut down in June of 2018, have it in their Steam game library.
   
2. Family Sharing is disabled for this game. Proof[prnt.sc]
   
3. A.V.A. used to be F2P, so Steam Gift Keys could never be created for this game, so you cannot add this game to your account.
   
4. The new A.V.A. re-release will not give you the Black Rose.
   
5. The download url (steam://install/102700) doesn't work anymore. It used to work for some time after the game was unlisted from the Steam Store, however it is not working anymore
   (it will only download the game for people who already have it on their accounts)

NOTE: You need to own A.V.A. on the same Steam account that you want the TF2 knife on. The knife is untradeable and impossible to transfer between accounts in any other way, and you can only get 1 per account.

(Playing a F2P game adds it to your Steam account, so even if the game disappears in the future (like in A.V.A.'s case), you will still have it in your library)


So you have 3 options left:

1. Give up
   
2. Buy the glitched tradable Black Rose on the Steam Market (extremely expensive)
   
3. Find out that you played this game before June 2018, and have it in your Steam library, in which case you can download it like any other game, and use SAM to assign yourself the required achivement.

Additional resources:
Steam app ID of this game: 102700
SteamDB page for this game: https://steamdb.info/app/102700/
Steamcommunity page for this game: https://steamcommunity.com/app/102700/

Feel free to share this guide as a quick response to the countless threads asking about how to get the TF2 knife ^.^

[DUCK MAN]

gonna kill myself

[wojtekpolska]

@popfulmail i told in this guide u cant familyshare this game

[popfulmail]

You can't even get it by family sharing an account. Even if it's installed on your computer, steam doesn't allow you to open the game from the library if you're playing it on a family-shared account. RIP.

[deadlift champion]

i have it lol ez

[⛧KILL_ME⛥]

Masz nadal tą grę?

[Vater Dœürlîæ]

Can confirm option 3 still works RN

[Filibuster Crunchmonkey]

i used sam to get every achievement but i did not get the black rose. PLS help

[Filibuster Crunchmonkey]

some how i got this game in 2015 (two years before i played tf2) wtf. also, what is SAM?

[wojtekpolska]

@$parkbag yea the killstreaks are cheap as you can't get the knife anymore, while the killstreaks still drop from MvM.

There are probably more killstreak kits for this knife than the knives themsleves

[Kawaii Lobotomy~]

i have it and put killstreak on it for funs