Here is the full list of all 42 Tetris Effect: Connected achievements worth 1,000 gamerscore.
Earn a 15 Combo.
Earn S Rank everywhere possible.
Earn 100 avatars.
Achieve Player Level 100.
Earn A Rank or higher in all Effect Modes.
Discover a land of golden Tetriminos.
Clear Playlist: Sea, Wind, and World modes.
Play Marathon, Ultra and Sprint modes.
Clear 1,000 Infected Blocks in Purify mode.
Earn 100 All Clears.
Earn 10 All Clears.
Earn a 10 Combo.
Participate in a Weekly Ritual.
Achieve Player Level 50.
Rotate Tetriminos 100,000 times.
Earn SS Rank 10 times.
Earn 10 Back-to-Backs in a row.
Clear 10,000 Lines.
Earn 500 Back-to-Backs.
Witness a meteor shower in Countdown mode.
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Achieve Player Level 30.
Earn 500 Tetris Line Clears.
Earn A Rank or higher in all Areas of Journey Mode.
Clear 1000 Lines total across all Zone visits.
Earn your first SS Rank.
Complete all Areas of Expert Journey Mode.
Complete all Areas of Journey Mode.
Earn 100 T-Spins.
Enter the Zone for more than 10 minutes total.
Earn 100 Tetris Line Clears.
Complete Area 4 of Journey Mode.
Achieve Player Level 10.
Earn 50 Back-to-Backs.
Clear 18 Lines or more in a single Zone visit.
Clear 1,000 Lines.
Complete Area 1 of Journey Mode.
Clear 12 Lines or more in a single Zone visit.
Earn 10 T-Spins.
Earn 10 Tetris Line Clears.
Clear 100 Lines.
Activate the Zone mechanic.