Trivia: When finding the collectibles in game, Doomguy inspects each one briefly before pocketing it. Each bears a resemblance to Doomguy in his armor in one form or another in various color schemes. When you find the collectible titled Doomguy as his own counterpart, you Doomguy will actually fist bump the doll in a unique animation that only plays for this one collectible.
Trivia: The protagonist of the Doom series has many nicknames. Including; Doom Marine, Doom Slayer, Hell Walker, Unchained Predator, Scourge of Hell, Doomguy, and DM1-5. His real name is stated to be B.J. Blazkowicz III, and is possibly a decedent of B.J Blazokowicz from Wolfenstein, a game series made by the same company.
Trivia: Doomguy's suit is dubbed the Praetor Suit by the UAC in this game. This name comes from the Latin word Praetoriani, which translates to "Praetorian Guard" who were the elite Roman soldiers guarding the Emperor. Furthermore, the term Praetor was also the name given to the two ancient Roman magistrates that ranked just below consul.
Answer: Another thing I've noticed is that if you add up all the individual numbers in 61,337 and then reverse the two letters you get 20 and 16. Both together is 2016, the year the film was released. Could be a coincidence but I doubt it.