Semyon Slayer Krivulya is a ukrainian professional full support player.

He started his esports career in 2013 as a member of Aurochs, where he took the second place at the GameCom Dota 2 EU Tournament and earned the first prize money of 1000€. Later, the player left the team and played for two teams at the same time - DTS2010 and WeMakeThat!.

In 2014 he joined Vega Squadron. By the way, Slayer is best known as a player of this team. Semyon's teammates were such famous players as Vladimir No[o]ne Minenko, Andrey Mag Chipenko and Alexey Solo Berezin. Achievements of the team were such performances: victory at Yard G2A Fest Ep.1 and Esportal Dota 2 League Open Tournament 4, also seventh place at DreamLeague Season 3, and the most important - victory at ESL One New York 2015. To top it all off, the team attempted to qualify for The International 2016, but finished 6th-10th at the qualifiers. In 2018, the team disbanded and the player tried to find his place in teams such as Odium, NoPangolier, Natus Vincere, Cyber Legacy, Team Unique, Mind Games and others. 

• In 2023, Slayer joined MoneyMakers, where he became captain at the same time.
• Slayer's last achievement was a third place at DOTA Summit 11, as a replacement for HellRaisers.

In 2024, CemaTheSlayer took on the role of coach for Dragon Esports. Under his guidance, the team won CCT Dota 2 Series 4, but soon after, the roster disbanded completely. Soon, he joined the stack LFG Esports, which was later renamed Apple City Gang. The updated roster made its debut in the open qualifiers for FISSURE Universe Ep.4, but failed to reach the closed stage. Later, the team competed in European Pro League 24 and CCT Dota 2 Series 7, placing 5th and 3rd respectively.

On June 5, 2025, became part of the TEAM NEXT LEVEL organization.

In August, TEAM NEXT LEVEL became the champion of European Pro League 29.

• On January 17, he became part of Team Lynx’s main roster.

At the end of March 2026, Team Lynx placed 2nd at European Pro League 35, losing to Zero Tenacity in the grand final, but by the end of April the team became champions of European Pro League 36.