May be wrong, but I believe "Peaceful victory" was an old achievement that is now called "Full House"
Peaceful victory
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... idk
By the way, here's the updated achievements leaderboard! 
jonaissigma wrote:
... idk
Well, it's the same thing: "You won without losing any pieces!"
25 days ago
0
#126
Now I tried with my acc ant my alt to get fool mate I comfirm it ids fake
25 days ago
0
#129
KeSetoKaiba wrote:
Seems like a fake achievement. I just won against Martin by not capturing anything of theirs. It wasn't pretty, but no achievement for it:
Martin took ure peace
25 days ago
0
#131
Guys this is fake a youtber name crossiant did t and lied he got it. https://www.youtube.com/watch?v=ZKaoKbu2Vug
it could be a secret achivement
22 days ago
0
#136
croissant maybe lied on Master of Chaos(or the prson who sent him an image.) I got it but no award!!!!
bruh
21 days ago
0
#137
Guys, this IS a peaceful victory but the achievement isnt showing up (swear not paid actor)
The achievement didn’t show up because you didn’t win, it’s okay we know you didn’t
hmm