Adrenaline shots can be found on any level. Use an adrenaline shot then quickly revive a teammate 10 times for this Achievement. You can do this in certain safehouses in single player. Find a safehouse, like the first one in the Parish at the end of Act 1, and shoot your teammates until they are incapacitated. Use a shot, then quickly revive all three of them. Grab another shot and repeat this process a few times to get the Achievement.