Not all records have been kept, but here are some of the highlights
Most Games Played - 42 (AON; S10)
Most Battles Won - 30 (LSJ; S10)
Most Battles Lost - 22 (ARC, S5)
Most Championships Won (clan) - 4 (LSJ; S2, S4, S7, S11)
Most Tournaments Won (clan) - 4 (LSJ; grunt tourneys 1 and 4, Clone Wars tournament, 2014-15 winter Tournament)
Most Championships Won (player) - 5 (LAK; S2, S4, S7, S10, S11)
Most Championships Won by one player in a row - 3 (Bio-Storm; S7-S9, {Delta}; S2-S4)
Most Championships Won by a clan in a row - 2 (BOT; S8 and S9)
Most Tournaments Won - 4 (Iceman; Grunt/Sniper Tournament, Grunt Tournament #2, Grunt Tournament #3, Clone Wars tournament)
Most MVPs Won - 3 (Kratos; S4, S7, S11)
Fastest Map: 1:28 Tantive IV - FEAR vs FE season 7