Here is the full list of all 43 Tetris Effect: Connected achievements.
Clear 1,000 Infected Blocks in Purify mode.
Clear 10,000 Lines.
Earn your first SS Rank.
Clear 1000 Lines total across all Zone visits.
Clear 18 Lines or more in a single Zone visit.
Complete all Areas of Expert Journey Mode.
Earn 500 Tetris Line Clears.
Earn 10 Back-to-Backs in a row.
Achieve Player Level 30.
Earn 100 All Clears.
Earn A Rank or higher in all Areas of Journey Mode.
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Witness a meteor shower in Countdown mode.
Earn a 10 Combo.
Earn 100 T-Spins.
Play Marathon, Ultra and Sprint modes.
Clear Ambient: Sea, Wind, and World modes.
Earn 50 Back-to-Backs.
Earn 100 Tetris Line Clears.
Earn 10 All Clears.
Enter the Zone for more than 10 minutes total.
Participate in a Weekly Ritual.
Complete all Areas of Journey Mode.
Achieve Player Level 10.
Clear 1000 Lines.
Complete Area 4 of Journey Mode.
Earn 10 T-Spins.
Earn 10 Tetris Line Clears.
Complete Area 1 of Journey Mode.
Clear 12 Lines or more in a single Zone visit.
Clear 100 Lines.
Activate the Zone mechanic.
Earn all achievements.
Achieve Player Level 50.
Achieve Player Level 100.
Rotate Tetriminos 100,000 times.
Earn 500 Back-to-Backs.
Earn a 15 Combo.
Discover a land of golden Tetriminos.
Earn A Rank or higher in all Effect Modes.
Earn SS Rank 10 times.
Earn S Rank everywhere possible.
Earn 100 avatars.