Here is the full list of all 43 Tetris Effect: Connected achievements.
Clear 10,000 Lines.
Clear 1,000 Infected Blocks in Purify mode.
Earn 10 Back-to-Backs in a row.
Play Marathon, Ultra and Sprint modes.
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Earn 100 All Clears.
Complete all Areas of Journey Mode.
Complete all Areas of Expert Journey Mode.
Earn 50 Back-to-Backs.
Complete Area 4 of Journey Mode.
Participate in a Weekly Ritual.
Earn 10 All Clears.
Earn 100 Tetris Line Clears.
Witness a meteor shower in Countdown mode.
Enter the Zone for more than 10 minutes total.
Achieve Player Level 10.
Clear 1000 Lines.
Earn 10 T-Spins.
Earn 10 Tetris Line Clears.
Complete Area 1 of Journey Mode.
Clear 100 Lines.
Clear 12 Lines or more in a single Zone visit.
Activate the Zone mechanic.
Earn all achievements.
Achieve Player Level 30.
Achieve Player Level 50.
Achieve Player Level 100.
Rotate Tetriminos 100,000 times.
Earn 500 Tetris Line Clears.
Earn 500 Back-to-Backs.
Earn 100 T-Spins.
Earn a 10 Combo.
Earn a 15 Combo.
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.
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.