Here is the full list of all 51 Bob Wants to Go Home achievements.
Beat the first level
Completed level 5
Completed level 10
Completed level 15
Completed level 20
Completed level 25
Completed level 30
Completed level 35
Completed level 40
Completed level 45
Completed level 50
You got Bob home!
Completed level 2
Completed level 3
Completed level 4
Completed level 6
Completed level 7
Completed level 8
Completed level 9
Completed level 11
Completed level 12
Completed level 13
Completed level 14
Completed level 16
Completed level 17
Completed level 18
Completed level 19
Completed level 21
Completed level 22
Completed level 23
Completed level 24
Completed level 26
Completed level 27
Completed level 28
Completed level 29
Completed level 31
Completed level 32
Completed level 33
Completed level 34
Completed level 36
Completed level 37
Completed level 38
Completed level 39
Completed level 41
Completed level 42
Completed level 43
Completed level 44
Completed level 46
Completed level 47
Completed level 48
Completed level 49