Syphon Filter 2 (PS1): Mission 8: C-130 Crash Site
When this was on the original PS1, this was the last mission before you had to switch disks so it was treated like a boss mission. The enemies after you get the disks all have the head-shot lock and if you play this on hard mode, the whole level they have the head-shot lock. I know some will say I cheesed my way through this mission with the M-79, but if the level gives it to you, I will surely use it.