Here is the full list of all 61 GO AWAY, THERE'S KUMIS OVER THERE! achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Get score 850 or higher.
Get multiplier 30 or higher.
Get multiplier 20 or higher.
Get multiplier 60 or higher.
Get multiplier 55 or higher.
Pick up the cookie (23x).
Get score 975 or higher.
Get score 1000 or higher.
Pick up the cookie (21x).
Pick up the cookie (22x).
Get score 900 or higher.
Get score 925 or higher.
Get score 950 or higher.
Pick up the cookie (20x).
Get multiplier 50 or higher.
Get score 750 or higher.
Get score 800 or higher.
Get score 875 or higher.
Pick up the cookie (18x).
Pick up the cookie (19x).
Get score 650 or higher.
Get score 700 or higher.
Get multiplier 45 or higher.
Pick up the cookie (17x).
Get score 550 or higher.
Get score 600 or higher.
Pick up the cookie (16x).
Pick up the cookie (15x).
Pick up the cookie (14x).
Pick up the cookie (13x).
Pick up the cookie (12x).
Use the bomb.
Pick up the cookie (11x).
Get multiplier 35 or higher.
Pick up the cookie (10x).
Pick up the cookie (9x).
Catch the kumis (1x).
Pick up the cookie (8x).
Get multiplier 25 or higher.
Pick up the cookie (6x).
Pick up the cookie (7x).
Pick up the cookie (5x).
Get multiplier 15 or higher.
Pick up the cookie (3x).
Pick up the cookie (4x).
Pick up the cookie (2x).
Pick up the cookie (1x).
Get multiplier 5 or higher.
Get score 500 or bigger.
Get score 450 or bigger.
Get score 400 or bigger.
Get score 350 or bigger.
Get score 250 or bigger.
Get score 300 or bigger.
Get score 200 or bigger.
Get score 150 or bigger.
Get score 100 or bigger.
Get score 50 or bigger.
Get multiplier 10 or bigger.
Let your horse die.
Run the game.