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