Jane cursed. She didn´t do it very often, quality over quantity was her motto in these things. To show her position was flat out stupid. "It looks like we are going to blast a lot more than just these doors..." she said angrily. 
Three trying to shoot their way against more than two dozens? That will hell of a ride to survive. They could always back out, but leaving Quarian to her fate just didn´t feel right to her. They will have to try it. She had the power of two skilled combatants, grenades and biotics on her side, after all, if she couldn´t do it, then nobody could.
She turned to her team and gave orders "Tali start with hacking those doors, Garrus prepare to throw some grenades. We are going to make a hell of an entré."
While waiting, she prepared her biotics. First she raised her barrier, then mentally and physically prepared to do even harder things. She knew that in the end of the fight, she will be more spent than her shotgun´s magazine, but she didn´t see any other way to do things.

Panel at the side of doors make its characteristical sound and doors started to open.
"Garrus, now!" Jane yelled and couple of small object flew through the opening doors. Sounds of explosions followed shortly after. Even more things flew in the air and Jane counted to three to prepare herself. She was about to do something very stupid. 
She channeled her powers and then charged into the crowd of enemies like a bullet. Shockwave of her charge sent down most enemies around her and Jane systematically shoot those who were still standing, while trying to find some kind of cover.
Her squad mates joined an assault not much later. Garrus provided her with a cover fire, spraying enemies with his assault rifle. Tali disrupted enemy on other side. She put her skills into good use and Geth were soon fumbling with some kind of malfunction.

Jane´s fingers almost never left her gun´s tap. She emptied her magazine into the closest Geth, quickly reloaded while sending another Geth into air and sent him into silicon heaven shortly after. So far so good, she told to herself and peeped from cover to take down another enemy. She shot him right into flashlight, but another Geth paid her back. Jane´s barrier wavered and shot came through, it even pierced her shield and armour and burned her left shoulder. "Bloody hell!" she growled but kept fighting. It will have to wait.

"That was the last one!" Garrus shouted. And Jane lowered to her knees, exhausted. The gunfight lasted just a few more moments, but to Jane it seemed like an eternity. Her wounded shoulder pained like a hell, her stomach tried to devour itself and her lungs were desperately in need of more air. The adrenalin was all out, and she felt really tired. "Are you guys alright?" she asked with lowered voice. Their response was positive. At least something.
She found her way back on her feet and slowly walked into another part of the mine. "Let´s find that Quarian then..."