I opened the door leading in the Arkham Mansion to find Dr. Evergreen and the formula before the Mane-iac does. I entered in the Mansion Entrance Hall, where there is a wide doorway but no doors. There is an electrical security gate in front of me. Beyond the gate is a statue of the Warden on a pedestal with two small stairways leading farther into the Mansion. The entrance is decorated with the Arkham logo on the wall and on the floor. Unfortunately, the security gate is activated and there are two Blackgate scumbags behind it.
"Well, look who it is," an Earth pony thug said in a sarcastic tone.
"The Big Bad Bat, come on, come and get us," the second one added. The Pegasus thug turned and raised his flank in the air and shook it mockingly. I shook my in slight annoyance of these buffoons.
"Oh, look at her, she's stuck out there, don't you have a cat to rescue from a tree or something?" the first thug asked.
"Yeah, go on out, we're in control of here, Mane-iac will finish you off," the second one added. Knowing it'll waste a little time, I simply gave them silence and turned back around to head back outside. I know there is another way in the Mansion, so I have to go up.
Back outside, I grappled up to the concrete platform where I took out the last two snipers earlier and spotted a grate that'll lead in the Mansion above the security gate and the idiotic dolts. I pulled out my Batclaw and the claw grabbed the grate and pulled it. I climbed in the vent. I dropped down in a small space with stacks of paper cluttered amongst the walls. I opened the door that leads back in the Mansion.
I'm back in the Mansion Entrance Hall. I'm on a carpet ledge, high above the the thugs, now counting three of them, one unicorn levitating a machine gun. On the far end of the hall, there is a ventilation duct that can lead me further in the Mansion. I looked over the thugs and listening to their conversation.
"Yeah, I can't believe Batmare just left!" a thug exclaimed.
"Yeah, stinking coward limped off, can't feel it in her legs," another one commented teasingly.
"Tried to get past the security gates and couldn't do it," the third one added.
"Too bad, I would've got the chance to rip her head off!" one commented.
I glided off the platform and headed towards the unicorn with the gun. I kicked him in the face with my hind legs, sending him towards the ground in a great daze. My landing made the other two thugs backed away slightly from the glide attack. Now taking the chance and time, I immediately took out the gunner with a Ground Takedown and countered the second thug's punch by throwing away his front hoof, sweeping him off of his legs with my right front hoof and punched him in the gut to pin him down. I continued my attack by kicking the third thug and took him out with another Ground Takedown. The last thug stood up from his beating but I threw a batarang at him, knocking him down again and I lept in the air to knock him out with a Ground Takedown.
After finishing the thugs, I galloped to the bottom of the small staircase and found a grate. I pulled the grate off and crawled in the vent. Like I expected, I found another Riddler trophy. I crawled back out of the vent and grappled up to the top of a ventilation duct system at the far end of the hall, back up in the ceiling.
"So, you found it at last, what have you been doing with your time?" Trixie asked.
I looked up at the ceiling and spotted another grate. I used the Batclaw to pull out the grate and grappled up through the duct. In a small space that has fuse and breaker boxes, I spotted a weak wall that can be accessed further in the Mansion. I pulled out the Explosive Gel and sprayed it on the wall. I pressed the detonator and the wall exploded in a cloud of rubble and dust.
In front of me, there is another ventilation system in the bottom right and in front of me is another cryptic trapezoidal stone with the inscriptions around the beetle, another Chronicle of Arkham. I used the Environmental Anaylsis to decrypt the message.
My family's killer stood in front of me. Years of therapy have deemed him sane, I was proud to see him walk freely. In exchange for his liberty, the state required only a signature. He talked about wanting to walk in the park, how he longed to feel fresh air on his face. Then he took my father's fountain pen and killed my secretary. As he was subdued, he screamed out pleading for forgiveness, for pity...but I had none. I watched as the guards beat him to a stain on the floor.
Taking note of the message that Amadeus allowed the guards to kill the killer for his failure of redemption, I continue to crawl in the ventilation duct and dropped out of the duct in the Main Hall. Back on top, I spotted several Blackgate convicts throwing, ripping, looking, and observing through the gathered books, paper, data, all sorts of printed paper to search for what I know is the formula for the Mane-iac.
The Main Hall has the statue of Amadeus Arkham in the center of the two miniature stairs leading to two small monitoring buildings that watch two doors at the end of the hall. A small office space is spotted below me, with the crumpled up and messy and unorganized paper that was haphazardly and unceremoniously thrown away and about by the convicts.
Speaking of Mane-iac, the intercom chimed in, in its normal tune.
"Mane-iac here with a little update for you: First the good news is, we have Dr. Evergreen. Bad news is...she's not talking. She must have her documents somewhere in the Mansion, I want it found. I got a plan or six of loosening her tongue but take time, search every cook and granny, there's a prize for whoever finds them."
I counted ten convicts, an easy match. I glided off the deck and kicked the observer in the back of the head, all Earth ponies. I continued my assault by hitting the second thug with a roundhouse and the third one the same. I kneed the fourth thug in the face and hit the sixth one with a cartwheel kick. I countered the seventh thug's punch by sweeping him off of his legs and hitting him in the stomach. I hit the eighth thug with an axe kick and I grabbed the ninth thug's right front leg, throwing him over the side and punched the knee and hoove connection bone, breaking his leg. One down, nine to go.
I hit the tenth with a butterfly kick and the eighth with a roundhouse. I knocked down the fifth with an overhead punch and countered the second's punch but grabbed his right hind leg, kicked him in the groin and kneed him in the face. I pinned down the third by a straightforward punch in the gut. I grabbed the fourth and threw him away.