Here is the full list of all 17 SnakEscape achievements.
Complete first level in Spring Pack with 99 moves and 3 stars.
Complete all levels with two snakes by 3 stars.
Collect 3 stars on each level.
Find the hidden treasure and an exit.
Get slipped on the glider and be eaten by snake 5 times.
Complete "Bresenham's circle" level with 3 stars after 10 deaths.
Get on the spikes 10 times.
Get slipped on the glider and fly off the level.
Complete the level in 20 or more minutes.
Use the glider more than 5 times in one level.
Leave 10 spikes before they will be open.
Complete summer levels with 3 stars.
Complete the level with 3 stars in less than 15 seconds.
Meet the Gingerbald.
Allow the snake to eat 10 stars.
Complete the level by blocking the snake.
Complete the level with 3 stars on the first try.