Lucrehulk

Lucrehulk is a strange-looking TESTBED boss that was added on a unknown date and will probably be discovered one day.

Design
Lucrehulk‘s main body consists of 9 pentagons arranged in a ring formation. There is a smaller circle inside connected to the main body by what appears to be a Gatling Gun Cannon. It has 5 Assassin Turrets, 3 large and 2 small. It also has 2 Machine Gun Turrets as well as 2 Swarm Spawner Turrets. On the central small circle, it has a Destroyer cannon.

Technical
Because Lucrehulk is a TESTBED boss, it’s stats are unknown.

Spawning
Currently does not spawn on the old arras io

Spawns on boss rush on wave 29 in the new arras io

Countering
You need 3-5 Hexa Builders to block out bullets. Get some Tri-Constructors as well. Now distract the boss using the Booster branch, ideally Shooting star. Now get a Splitter to kill it, and an Acid to slowly melt down its health. You could also get a Paralyzer to freeze the boss, or Incognito branch tanks to shoot it without being killed by it. Remember the core is it's weak spot, anywhere else won't do any damage. Congrats, you defeated Lucrehulk.

Trivia

 * This boss is based off of the Lucrehulk-class battleship from the Star Wars franchise that shares the same general shape as this boss.
 * This boss's outer "ring" looks a lot like AWP-Ring, with both being made out of tessellating pentagons.