The hockey mask is an allusion to the ones worn in the movie's introductory heist.
Done again with the community mask "Hockey Heat", which is a more accurate to the movie versions; wearing it for the first time unlocks the "Heat Around the Corner" achievement, referencing the movie's Title Drop speech (that is even written in full for the mask description).
Levelling to Infamy Level 1 unlocks a mask called "The Heat" that is just a pair of sunglasses from the movie. The description even alludes to how only total badasses rob banks with only shades as a disguise, as the characters do during their main bank heist.
The "I do What I do Best, I Take Scores" achievement requires doing 15 Armored Transport missions on OVERKILL difficulty wearing the community hockey mask, mirroring the movie's introductory heist.
The high-end Mastermind skill Kilmer is a reference to the actor Val Kilmer, who co-starred in the film.
Word of God has said that the Mastermind class, due to it's speciality in leading and controlling, is based around Neil McCauley (Robert DeNiro's character).invoked
The Preplanning Screen added in The Big Bank update displays how player can communicate to purchase specific assets; the players in question are named "Waingro" and "Chris Shiherlis."
Whilst irrelevant to the mask itself, completing wearing the bear mask and completing 25 OVERKILL Vlad missions earns "From Russia with Love".
Completing a heist with each player wearing a different Death Wish mask unlocks "Ghost Riders".
Smashing all windows in Mallcrasher unlocks "Shoot the glass!"exp The line references a memorable scene where, realizing hero McClane is barefoot, German villain Hans shouts "Schieß dem Fenster!", before emphasizing "Shoot the glass!".
On Rats Day 1, keeping the law enforcers out the house while you cook three bags of meth unlocks "I Am the One Who Knocks", whilst cooking seven bags on OVERKILL or harder gets "Full Measure"; both are references to Breaking Bad.exp The first is from a speech where Walter notes no danger comes to his doorstep, and that if anyone with a gun knocks on a door, it will be him; the second is a line from character Mike, who notes that Walt needs to make a better overall effort through saying "No more half measures".
One of Wolf's pager responses is "Hell if I know. I read a Stephen King book though, started exactly like this..."
The crystal meth you cook in the first day of "Rats" is blue. If that was too subtle, Bain may say you should "break bad" and go into full-time meth-cooking if you decide to cook extra meth. Dallas may also say "it's time to break a little bad" when putting his mask on.
Bain: Which one of you is Heisenberg? Hector wants to know.
Sometimes, when a heist enters a new key part (starting the heist, opening a large vault, escape vehicle arrives, wave begins etc.), Bane will paraphrase "Okay Ramblers, let's get rambling."
Additionally, killing hostages will sometimes prompt Bain to say "Hey, Mr. Blonde! You been watching too many movies?!"exp. In Reservoir Dogs, Mr. Blonde is the character who, in one of the film's iconic scenes, tortures the cop they've taken as a hostage.
The Dentist trailer has a few nods:
Dr. Andersson is named after Bo and Ulf Andersson, a pair of brothers who founded GRIN and later became Overkill Software.
The Golden Grin Casino is a reference to Overkill's former studio, GRIN.