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