- Sept. 25, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++14 to solve problems in Codeforces Round #436 (Div. 2)
- Sept. 19, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++14 to solve problems in Codeforces Round #435 (Div. 2)
- Sept. 16, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++14 to solve problems in MemSQL Start[c]UP 3.0 - Round 1
- Sept. 6, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++14 to solve problems in Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises)
- May 7, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++14 to solve problems in Codeforces Round #412 (rated, Div. 2, base on VK Cup 2017 Round 3)
- May 4, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++14 to solve problems in Codeforces Round #411 (Div. 2)
- April 28, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++14 to solve problems in Educational Codeforces Round 20
- April 21, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++14 to solve problems in Codeforces Round #410 (Div. 2)
- April 16, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++14 to solve problems in Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2)
- April 5, 2017: stczhc got Polyglot for the usage of GNU C and Python 2 to solve problems in VK Cup 2017 - Wild Card Round 1 (Unofficial Public Mirror)
- March 31, 2017: stczhc got Variety is the spice of life for solving problems in 5 different languages
- March 29, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++11 to solve problems in Codeforces Round #407 (Div. 2)
- March 27, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++11 to solve problems in Educational Codeforces Round 18
- March 15, 2017: stczhc got Polyglot for the usage of Haskell and GNU C++ to solve problems in Codeforces Round #404 (Div. 2)

Lambda's best friend (24 / 50 completed)

Mainstream guy (26 / 50 completed)

Parselmouth (2 / 50 completed)

Polyglot 13 , last achieved on Sept. 25, 2017

Runs on billions of devices... Slowly

/usr/dmr (1 / 50 completed)

Variety is the spice of life , last achieved on March 31, 2017