Left 4 Dead Trivia, but its the HARDEST questions possible

TRIVIA PARA GAMERS ¿Qué tanto sabes de LEFT 4 DEAD? – Piénsale

Random Left 4 Dead 2 Facts (PART 1)

Which Left 4 Dead 2 Safe Room is the ""Nicest""?

All L4D2 Special Infected Music and Voices

Left 4 Dead 1 Mapping test (introduction of the L4D1 Beta in the No Mercy Original campaign)

Left 4 Dead Test Map 1

Left 4 Dead 2 Secret Ending (unlocks after 10,000 hours of gameplay)