Injustice: Gods Among Us – The Flash strategies, tips and basics

Notable moves

Dwn-Dwn+M (Running Man Stance) Fwd+M or Fwd+H is great for quick high/low mixups. note: *Not safe on block*

Back-Fwd+M (Lightning Charge) Really good to close gap. Relatively safe on block depending on how quick opponent's reversal attack.

Lightning Kick, Speed Dodge(MB) & Sonic Pound is safe on block

most of combo strings are safe on block depending on how quick opponents reversal attack. For exapmle: L-L or L-L-M & Back+M-M or Back+M-M-Fwd+H is safe on block

Combos

Jump+L, L-L-M xx Lightning Kick(MB), Dwn+M, F.Jump+L, H-M xx Lightning Kick(MB optional) – 38% dmg

Fwd+M-L xx Back Back+MB, Jump+H, H-M xx Lightning Kick(MB) – 41% dmg

Back+H or Fwd+H, F.Jump+M, L+H, L M xx Speed Zone – 40% dmg (this requires a stage with hazard knockback with the "L+H" input.

Fwd+M-L xx Lightning Kick(MB), Dwn+M, Time Loop, Lightning Charge x5, H-M xx Lightning Kick – 38% dmg (note: work way to corner)

Back+H, Fwd Dash, F.Jump+H, Dwn+M, Time Loop, Lightning Charge x4, H-M xx Speed Zone – 39% dmg (note: work way to corner)

Fwd+H, Time Loop, Lightning Kick x4, Back+M-M-Fwd+H xx Speed Zone – 58% dmg (note: Lightning Kick x5 is possible, but requires precise execution for 62% dmg)