Casting perls (1 / 50 completed)
Lambda's best friend (1 / 50 completed)
Language does not matter , last achieved on March 28, 2015
Mainstream guy , last achieved on Jan. 23, 2016
Parselmouth (2 / 50 completed)
Polyglot , last achieved on April 5, 2017
Runs on billions of devices... Slowly
Variety is the spice of life 2 , last achieved on April 5, 2017
