Unless you're using a sniper rifle, sights/scopes aren't really necessary, and are mostly there for aesthetic reasons.
If you are using a sniper rifle, putting the crosshairs on the target guarantees a hit exactly where the crosshairs are. Leading a target, accounting for wind and temperature, accounting for bullet drop, etc are not necessary, regardless of distance.
If one pistol is good, 2 pistols are better, cause if you can hit a target with 1 pistol, why would it be any harder to hit multiple targets while wielding a weapon in your weak hand, shooting in multiple directions, without bothering with the sights?
Cars are VERY prone to exploding.
Falls from any height are survivable with minimal ill effects, as long as you land on a pile of garbage or in water. In some cases, cars also act as remarkably effective cushions.
It requires minimal effort to jump through or be thrown through a plate glass window. Leaping or being thrown through said windows very rarely result in cuts from broken glass.
You can easily throw any bladed weapon. Unless deliberately thrown to injure/cripple or disarm a target, said weapon will always result in a lethal injury, even with rather non-lethal weapons like shurikens.