Here is the full list of all 32 Tents and Trees achievements.
Complete 20 9x9 levels.
Complete 175 levels.
Complete a level in dark mode between 10 PM and 7 AM.
Complete a level (7x7) placing only tents without mistakes.
Complete a daily level two days in a row.
Complete 60 levels.
Complete a level (10x10) in less than 1:35.
Complete a level (8x8) in less than 1:25.
Complete a daily pack easy in less than 3 minutes without using hints.
Place a link between a tree and a tent.
Complete 15 levels.
Complete 350 levels.
Complete 1000 levels.
Complete 20 11x11 levels.
Complete 20 13x13 levels.
Complete 20 15x15 levels.
Complete 20 17x17 levels.
Complete a level (12x12) in less than 2:45.
Complete a level (14x14) in less than 4:30.
Complete a level (12x12) for the first time without using hints or undos.
Complete a level (13x13) for the first time without using hints or undos.
Complete a level (14x14) for the first time without using hints or undos.
Complete all the daily levels for one day.
Complete a level (8x8) placing only tents without mistakes.
Complete a level (9x9) placing only tents without mistakes.
Complete a level (10x10) placing only tents without mistakes.
Complete a level (11x11) placing only tents without mistakes.
Complete all the classic packs.
Complete a daily pack hard in less than 9 minutes without using hints.
Complete 14 daily packs over the last 7 days.
Complete a level with 2 players.
Complete a level with 4 players.