Learn to use sprint (default SHIFT), but remember:\\Stamina is used for both sprint and jump.
Injured legs will slow your movement.\\And slow soldier is a dead soldier.
Keep in mind that injured hands will lower your accuracy.
You won't hit much while shooting from the hip,\\learn to aim (default Midle MB).
Watch out for snipers, their bullets hardly ever miss.
Don't lose your head, you will need it.
Once you are hit,\\red mark will point you where the attacker stands.
