The Version 12.0 Title update for Bloons TD 6 has 12 achievements.
You have it set to M for mini, when it should be W for wumbo
Complete a game in CHIMPS Difficulty with only 2 towers
Finish a game with exactly half your starting lives and half your starting cash
Send $500,000 to an ally in co-op in one go
Gain entry to 500 Races
Complete a Race in under 10 minutes
Complete a Race in under 5 minutes
Complete any Race in under 3 minutes
Create or Play 200 Challenges
Win 100 games using a skin of any Hero
Pop 200,000 Bloons on Peninsula
Deal 1 billion damage with the Bloon Master Alchemist