Here is the full list of all 20 SnackHunter achievements.
Cook up 5 Snacks in one round
Play a round in which all players wear customization
Play a round in which every type of Snack is chosen at least once
Play your first round of SnackHunter
Play 10 rounds of SnackHunter
Play 50 rounds of SnackHunter
Play 100 rounds of SnackHunter
Play 500 rounds of SnackHunter
Have all three cranes active at once
Rescue 5 snacks in a row from the cauldron before a new one gets thrown in
Play a round with only tomatoes as Snack players
Play a round with only chilis as Snack players
Play a round with only broccolis as Snack players
Play a round with only eggplants as Snack players
Play a round with only onions as Snack players
Play a round in which 50 polaroids are taken
Finish a round in under 3 minutes
Play a round with 16 players
Play a round in which the Hunters win
Play a round in which the Snacks win