"Hey, you wanna do this? Be my guest. But this, ain't a job you wanna rush." - To Dutch, who tells him to hurry up, said as he arms a detonator on the bridge leading to the ONI facility Alpha Site.
"Come on, tough guy, we gotta blow this bridge." - To Dutch, after arming the last charge at the middle of the bridge.
"Dutch, arm the other charges!" - To Dutch, telling him to arm the last two charges.
"Forget about 'em, we got explosives to set!" - To Dutch, who looks back at the assaulting Wraiths.
"Follow me, arm the charges!" - To Dutch.
"Dutch, ignore those tanks!" - If the player, as Dutch, fights the advancing Covenant troops.
"I got this one, Dutch, you do the rest!" - If the player walks past the first charge.
"Great, I got to do everything myself?" - If the player walks past the second charge.
"That's the last one Dutch! Everyone, behind those barriers, bridge is set to blow!" - To the group, after the last two charges are armed.
"Watchtower Dutch, get up there and pull the trigger!" - If the player doesn't climb up the ladder leading to the watchtower.
"What's the hold up, Dutch? Blow this sucker sky high!" - If the player doesn't trigger the charges using the laptop.
"Woo-hoo! Yeah! That's the way!" - Enthusiastically, as the bridge leading to ONI Alpha Site detonates, killing all Covenant troops on it.
"Aw man, Covenant landing on the other side of the wall!" - Said as the NMPD officers and remaining Marines enter ONI Alpha Site's courtyard.
"C'mon Dutch, those cops aren't going to last long against Brutes! - If the player doesn't go under the wall leading to the courtyard.
"Over here Dutch, into the tunnel, under the wall!" - If the player still doesn't follow the group into the courtyard.
"Go, Dutch! We gotta keep the Covenant away from that building." - To Dutch, as they enter the courtyard, encountering Covenant troops, including a pair of Hunters.
"More Phantoms, look sharp!" - During the fight in the courtyard.
"Dutch, inside the building! Now!" - To Dutch, as the survivors enter the ONI facility.
"Wait, what? More explosives?" - Inside the facility, after hearing a Police Sergeant ordering Officers to arm more detonators.
"The only thing I don't like, is that our butts are currently inside this facility." - After Sergeant tells him and Dutch they can "jump [their] butts back into orbit" if they don't want to follow the orders of detonating the building.
"Dutch, scan right!" - To Dutch, during the fight inside the facility.
"They're pouring into the left!" - To the group during the fight.
"Right side, Dutch!" - To Dutch, who uses a turret to clear the area.
"That's the last of 'em Dutch, come back to my position!" - To Dutch, as the fight inside the facility comes to an end.
"Alright, that's it. Transfer the detonation codes to my COM. If anyone's takin' this place out, it's gonna be me." - After an officer arrives in an elevator, telling the group there are enough detonators to blow the building twice.
"I love blowing crap up Dutch, but this situation sucks." - To Dutch, as they ascend to the building's rooftop. Only heard with IWHBYD Skull activated.
"Finally, a good reason to blow this building up!" - When a Police officer tells Dutch the city's underground tunnels are filled with Drones.
"There's our ride! Go! Go! Go!" - To Dutch, after clearing the rooftop of Covenant troops.
"Let's get outta here Dutch come on! - If the player doesn't board the Pelican.
"Building's lost. Nothing more we can do." - If the player still doesn't board the Pelican.
"Dutch, I thought you wanted to leave." - If the player doesn't board the Pelican after the previous quote.
Or, with IWHBYD Skull activated: "Dutch, you dumbass, get aboard!"
"Sure do!" - In response to the Police Officer onboard the Pelican, who asks do they know a Gunnery Sergeant named Buck.
"This day ain't turnin' out so bad after all!" - Said as the Pelican zooms away from the exploding facility.
"Sky's kind of crowded, Gunny." - To Buck, who reunites with Dare and the Rookie in the Superintendent's core and has return to surface for extraction.
"Have to reroute, Gunny, the whole damn city's on fire!" - To Buck, who asks for his ETA.
"Whoo-yeah! Line 'em up, boys!" - Said as the captured Phantom enters Uplift Nature Reserve's entrance, also where Buck, Dare, the Rookie and their assest, an Engineer that absorbed Vergil, are holding their position at.
"Aw, come on! I don't want one of those things in here!" - To Buck, who tells him the Engineer is joining him in the Phantom's cockpit. Last line said in Campaign.