Here is the full list of all 79 Dragon Hunter achievements.
Complete all levels with 3 Stars
Complete all levels
Complete level 66
Complete level 65
Complete level 64
Complete level 63
Complete level 62
Complete level 61
Complete level 60
Complete level 59
Complete level 58
Complete level 57
Complete level 56
Complete level 55
Complete level 54
Complete level 53
Complete level 52
Collect 150 Stars
Complete level 51
Complete level 50
Complete level 49
Complete level 48
Complete level 47
Complete level 46
Complete level 45
Complete level 43
Complete level 41
Complete level 35
Complete level 34
Complete level 32
Complete level 30
Complete level 24
Complete level 19
Complete level 10
Complete level 7
Complete level 44
Complete level 42
Complete level 40
Complete level 39
Complete level 38
Complete level 37
Complete level 36
Collect 100 Stars
Complete level 33
Complete level 31
Complete level 29
Complete level 28
Complete level 27
Complete level 26
Complete level 25
Complete level 23
Complete level 22
Complete level 21
Complete level 20
Complete level 18
Collect 50 Stars
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 8
Complete level 6
Complete level 5
Complete level 4
Complete level 3
Get 2 Stars
Kill Green Dragon
Complete level 2
Get 1 Star
Complete level 1
Get 3 Stars
Kill Purple Dragon
Run out of arrows
Kill Brown Dragon