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