Stealth - Part 2

Stealth looked down the death defying drop as the building began to fall.
"Oh shit!" he cursed.
He pulled his black hood further over his head, checked the straps on his blades then ran towards the window opening. As he entered the air, he looked up and saw the crumbling building. Sparks flickered at several points as the electricity was cut, and the stone was fragmenting more every moment.
For a moment he thought he was going to make it to the other one, but it was clear he was not when he began falling.
He quickly charged his hands full of static and biotic jumped closer to the building, whilst activating his gloves. A high pitched noise was audible.
His gloves contained micro mass effect field generators that formed micro-singularities. Microscopic points of nearly infinite mass which acted as a suction mechanism, which allowed him to grab on to most objects with little effort.
Stealth's biotic jump had slowed him down somewhat, meaning that his gloves found purchase on the glass pretty much instantly. His descent was stopped altogether and his body slammed against the side of the building.
There was an explosion above him as the collapsing building collided with the one which was under gang control - on which he was currently situated.
He took a quick peak through the glass. There were more Krogan with rifles guarding a room at the back.
Stealth realised he'd have to go through the glass. The rubble from above was falling on his shoulders and larger pieces were falling towards him.
He drew his pistol, and biotic jumped again.
And appeared on the other side of the glass, pistol already firing. One Krogan was taken out immediately with two shots to the head.
A second Krogan turned and charged at him, knocking a table and several chairs out of his way without slowing. At the last moment, Stealth sidestepped out of the way, meaning that the Krogan smashed the glass and was sent flying out of the window, and was hit by a large piece of rubble a moment later.
The floor was shaking as the rubble from the first building kept colliding with the one he was currently in. He reckoned the top few floors of the building were destroyed.
The two remaining Krogans opened fire so he dived into cover. When they emptied their magazine and paused to reload, he poked his head above the work station he had hid behind and fired several times, causing them to scatter into cover the same as he was.
As they crouched behind a sofa, he biotic jumped behind them and shot both of them in the head before they even registered that he had vanished. He made his way to the elevator at the far side of the room and activated it, sending him to the ground floor as he could hear the distant rumbling of rubble and explosions.
There was some rather annoying music playing as he made his descent towards the ground. It was a soft jingling, and was completely inappropriate in the situation.
A moment later, the elevator doors opened and he stepped out into the lobby. It had black and white diamond patterns on the floor.
"Hey," said a male receptionist behind a desk to his left, standing up, "What are you doing here? What are those sounds?"
He had a mercenary tattoo on his arm, and a holster on his belt.
Stealth shot him twice without even breaking his stride.