Pentagon is the fourth Elite PVE Mode map, which is located inside a pentagon shaped robot manufacturing facility. The soldiers arrive at the sector in order to destroy an army consisting mostly of robots and then confront the Hyperion boss.
Soldiers are tasked to shut down an assembly line in a facility named the Pentagon. They will have to go up against an infinite amount of robots and other creatures until certain milestones are reached, which will summon a series of deadly bosses.
During the attack, Security Forces will frequently be deployed to stop soldiers from destroying the assembly lines, ranging from mini-Behemoth to Assault Drones. In addition, soldiers will have to deal with Weekly Obstacles as well, increasing the difficulty of the task.
Similar to Evil Mansion, there are some NPC soldiers assisting in this mission, but this time they can provide very useful buff depending on the character. Each soldiers has its own NPC following them, which allow them to each upgrade their own bot via a buy menu (Press ~) similar to those found in Void Rift and such, or they can quickly access the option by pressing F2, F3 and F4.
Upon starting the round, all player's bots are Staff Sergeant SWAT aimed with a Steyr AUG A1. From there, players can upgrade the bot's rank (F2), upgrade their stats (F4) and recruit a new bot of the same rank they're upgraded to (F3). Stats upgrading are always successful, whereas Ranking up bots may fail, but players can spam F2 over and over until the process is successful, as failing doesn't cost any gold coins.
Higher-ranking bots come with premium perks, either apply to themselves or the player, and there are a few rare bots that provide buff for the entire team. Always keep an eye out to recruit them.
After the first milestone is reached, the Reactor Behemoth emerges, in order to shake things up. It definitely got some upgrades since its initial appearance in Battleship; as it now has thruster functionalities and an energy shield. Here's the list of all of its attacks:
Machine Gun: It'll fire his machine guns at a soldier.
Laser Beam: It'll blast a laser at each soldier once.
Thrusters: It'll dash around with an energy shield.
Airstrike: It'll fire several timed bomb in the air.
Nuke: It'll charge up a large explosion upon defeat.
Reaching the second milestone summons the Mechanical Device from Boss Arena, which is still manned by an unknown entity in a hazmat suit. It also received some minor upgrades, granting it deadlier attacks and also healing capabilities. Here's the list of all of its attacks:
Beam: It will fire laser beams that tracks soldiers.
Wave: It'll send several shock-waves along the floor.
Vortex: It'll attract soldiers towards it to deal damage.
Battery (50%/20%): Healing phase until batteries are destroyed.
Nuke: It'll charge up a large explosion upon defeat.
At the third milestone, the final boss in its core form make its appearance. It's not a very strong boss, but can still pack quite a punch. Here are all of its attacks:
Machine Gun: It'll fire his machine guns at someone.
Missiles: It'll fire a large amount of homing rockets.
Rolling Shield: It'll dash around the map franticly.
Following the defeat of the core, it'll fuse into the Hyperion robot in the background and start causing chaos. This massive boss is somewhat similar to the Elite Guardian in that it's not that hard to fight on its own, but the presence of weekly obstacle makes the fight much harder. Here are all of its attacks:
Slam: It'll slam either side up to three times.
Laser: It'll blast lasers at two rows three times.
Shield Wall: A row of Behemoth with shields charging.
Vortex: It'll bring soldiers towards it to damage them.
Bombs: It'll send out a large amount of timed bombs.
Rolling Shield: The core comes out and perform its dash. During this time, Hyperion itself is invulnerable to damage.
Battery (50%/20%): Huge energy wall powered by batteries.
Nuke (40%): Soldiers must go in a shield zone to survive.
In a match, there is a very low chance to encounter the Gilded Hyperion boss. It doesn't act any different from the original variant, but players will get twice the rewards upon defeating the boss.
