Here is the full list of all 120 Stickman - Killer of Apples achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Complete Level 50
Complete level 49
Complete level 48
Complete Level 47
Complete level 46
Complete Level 45
Complete level 44
Complete level 43
Complete level 42
Complete level 41
Complete level 40
Complete level 39
Complete Level 38
Complete level 37
Complete level 36
Complete level 35
Complete Level 34
Complete level 33
Complete level 32
Complete Level 31
Complete Level 30
Complete Level 29
Complete Level 28
Complete Level 27
Complete Level 26
Complete Level 25
Complete Level 24
Complete Level 23
Complete Level 22
Complete Level 21
Complete Level 20
You killed Stickman20
You killed 19 Stickman
You killed 18 Stickman
You killed 17 Stickman
You killed 16 Stickman
You killed 15 Stickman
You killed 14 Stickman
Complete Level 19
Complete Level 18
Complete Level 17
Complete Level 16
Complete Level 15
Complete Level 14
Complete Level 13
Complete Level 12
Complete Level 11
Complete Level 9
Complete Level 10
You killed 50 apples
You killed 49 apples
You killed 48 apples
You killed 47 apples
You killed 46 apples
Complete Level 8
You killed 45 apples
You killed 43 apples
You killed 44 apples
You killed 42 apples
You killed 13 Stickman
You killed 41 apples
You killed 40 apples
You killed 39 apples
You killed 12 Stickman
You killed 38 apples
Complete Level 7
You killed 37 apples
You killed 35 apples
You killed 36 apples
Complete Level 6
You killed 34 apples
You killed 31 apples
You killed 32 apples
You killed 33 apples
You killed 30 apples
You killed 29 apples
You killed 11 Stickman
You killed 28 apples
You killed 10 Stickman
You killed 27 apples
Complete Level 5
You killed 25 apples
You killed 26 apples
You killed 23 apples
You killed 24 apples
Complete Level 4
You killed 22 apples
You killed 21 apples
You killed 20 apples
You killed 19 apples
Complete Level 3
You killed 18 apples
You killed 17 apples
You killed 16 apples
You killed 15 apples
You killed 9 Stickman
You killed 14 apples
You killed 8 Stickman
You killed 13 apples
You killed 12 apples
You killed 7 Stickman
You killed 11 apples
You killed 6 Stickman
You killed 10 apples
You killed 5 Stickman
You killed 9 apples
You killed 8 apples
You killed 4 Stickman
You killed 3 Stickman
You killed 2 Stickman
You killed 7 apples
You killed Stickman
Complete Level 2
You killed 6 apples
You killed 5 apples
You killed 4 apples
You killed 3 apples
You killed 2 apples
Complete Level 1
You killed 1 apple