高爆弾です！
YMFM
MISSON COMPLETE？

中文翻译：
任务：救出制作人羽中
416：打光一个弹夹“RELOADING！”
45：“9,扔一个9连闪进去。”
9：“FIRE IN THE HOLE!”
416：“G11快起来别睡了，（回过头）咦我的榴弹呢？”
9：“啊咧今天的9连闪怎么重得多？”
BOOM!
HOSTAGE DEATH
YMFM!
MISSON COMPLETE？

That's a HE grenade!

Above part is in Japanese. Next two lines are in 'English'.

MOTHERFUCKING SUNBORN!
MISSION COMPLETE?

YMFM = 云母飞妈 = GF slang for "fun police Yunmu (dev team for Girls' Frontline)"

Chinese 'translation':
What follows is Chinese (with a tiny bit of phonetic Japanese) in the original commentary.
Mission: Rescue Producer Yuzhong
Head dev and producer.

416: My clip's empty! RELOADING!
45: 9, toss in a 9-Bang.
9: FIRE IN THE HOLE!
416: G11, wake up already and stop sleeping. *turns* Huh, where's my grenade?
9: Are~, why is the 9-Bang this time much heavier than the usual?

Back to English now.

BOOM!
HOSTAGE DEATH
MOTHERFUCKING SUNBORN!
MISSION COMPLETE?