The Locked Gate in Blue Gate Map is a map mod event that requires Security Codes

 How to unlock the gate in Arc Raiders

 The Locked Gate event in Arc Raiders works like the Arc Raiders Hidden Bunker in that it requires the entire server to work together to unlock the area. This is full of valuable treasure. To unlock it, you must do the following.

 Collect 4 security codes at Raider's Refuge. Reinforced Reception. Pilgrim's Pike. Ancient Fort. You can find a security code in each place, but you'll need to search for it. You can keep searching until you've found it, and then move onto the next.

 Take the codes and go to the Gate Control Room. The building has multiple terminals where you can input a code.

 It should open the Blue Gate. The Checkpoint's massive gates leading into the underground area should now open. The loot in there will be higher than usual. There's often an Arc Raiders Bastion there along with lesser enemies. Not only that but all other players will also be alerted about what happened, possibly causing a frenzy.

 You may only have a few minutes to search through the Blue Gate, even if it is opened.

 YouTuber Domi set up two Arc Raiders account to see if matchmaking was different depending on how you played. One account would be more of a PvP player, a very aggressive one - shoot first and talk later. The second would be completely opposite, focused on PvE with a near complete avoidance of firing at human players.

 Domi's aggressive account seems to match up well with players who are also aggressive. A content creator once asked a rival if he also attacked people before. They fight each other to the death after they confirm his theory.

 The friendly raider on the other had an easy day. Domi said after meeting nine friendly people in a short time, "Everyone is chill and nice." "Nobody shot at me. "Nobody even tried to shoot at me in fact."

 However, aggression-based matching isn't the ramblings and rants of a YouTuber. Robert Sammelin of Embark Studios told PC Gamer matchmaking was "quite complicated." He added that they analysed behaviours and matched accordingly. Other factors like your loadout might also come into play. At least, we know that you are at least partially responsible for the energy attracted. It could be that the raider stopped you from obtaining your prize is karmic punishment.