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