Free Deadshot Daiquiri

This side quest has players shoot the heads of one of the test dummies in the T1 Mutant Research Test Area while standing on the outside platform of the T1 Mutant Research Lab to spawn 5 Deadshot Daiquiricans on the crane, which you must shoot without missing to obtain a free Deadshot Daiquiri.

Make sure you are standing on the outside platform, where the mystery box is when you shoot a dummy. You'll know you shot the correct test dummy if you hear a completion sound when shot.

You don't need a sniper to do this, but it can be extremely helpful to see and shoot the cans if you aren't running a high-magnification scope.