Here is the full list of all 27 Snail Bob 2: Tiny Troubles achievements.
Help Santa in Level 4-25 while Bob is in Santa outfit
Dress Bob in the Pirate Outfit and help the Pirate in Level 3-7
Dress Bob in the Devil Outfit and meet Dracula in Level 2-11
Dress Bob in the Football Ball Outfit and help the Frog in Level 3-20
Dress Bob in the Elvis Outfit and come upon the concert in Level 1-26
Dress Bob in The Batman Outfit and help Robin Hood to escape in Level 1-11
Dress Bob in the Cardboard Outfit and hide Bob in the box
Complete Level 4-22 faster than 16 seconds
Make 10 hockey shots
Make away with 30 Ghosts
Bob was gobbled by frog, crocodile, crab, bush lizard, spider and worm
Collect 363 stars
Bob is frozen 5 times
Complete Chapter 4 "Winter Story"
Collect the puzzle in Chapter 4 "Winter Story"
Break 200 Ice Cubes
Collect 273 stars
Complete Chapter 3 "Island Story"
Collect the puzzle in Chapter 3 "Island Story"
Hit Bob from the Cannon
Bob was burned, drowned, caught into a trap, fell into a pit and got in quicksand
Complete Chapter 2 "Fantasy Story"
Collect the puzzle in Chapter 2 "Fantasy Story"
Collect 150 stars
Complete Chapter 1 "Forest Story"
Collect the puzzle in Chapter 1 "Forest Story"
Complete chapter "Meet Bob"