Here is the full list of all 50 My Name is Mayo achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Red Mayonnaise. (Hit this 300 times)
Hit 3000 times!
Drink coffee. (Hit this 150 times)
Philosophy. (10 hits, follow the life)
Starchy fashion. (Hit this 200 times)
Follow in his footsteps. (Hit this 100 times)
Slap that cheese! (Hit this 250 times)
Part of life. (10 hits, follow the life)
It's not a phase, it's who I am! (Hit this 10 times)
Banana? (Hit this 300 times)
Drop the bombshell! (Hit this 50 times)
Hit 1500 times!
Cool whip is sexy. (Hit this 200 times)
Old fashioned and boring. (Hit this 200 times)
Muscles. (10 hits, follow the life)
Zzz... (Hit this 150 times)
Move. (10 hits, follow the life)
Tap it wild and free. (Hit this 125 times)
Daddy issues. (Hit this 100 times)
Hit 700 times!
Just kidding... (10 hits, follow the life)
Furry Rain. (Hit this 100 times)
The Box of Love. (10 hits, follow the life)
Like that old time Rock and Roll! (Hit this 50 times)
Hit 550 times!
Keep wearing the leopard (Hit this 100 times)
Hit 500 times!
Spin the yarn. (Hit this 50 times)
Something important. (10 hits, follow the life)
Hit 350 times!
Young soul. (Hit this 10 times)
Wear the bikini. (Hit this 50 times)
Hit 200 times!
Amazing Story (150 hits)
A Story About Life. (120 hits)
I am Mayonnaise (90 hits)
This will cheer you up! (Hit Mayo 75 times)
Hit 50 times!
Hit 20 times!
Hit the Mayo 5 times!
Hit 5000 times!
Hit 8000 times!
Hit 10000 times!
Unlock all the achievements!
Feline Ketchup. (Hit this 500 times)
Screw that. (Hit this 300 times)
Flipped. (Hit this 500 times)
While my guitar gently weeps. (Hit this 300 times)
In the end... (Hit this 50 times)
Talking about life. (10 hits, follow the life)