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