[Why worry indeed? When you're a soldier enhanced for stamina and strength and then beefed up with cyborg implants, you tend to be able to go longer than most people as well. When you're Shepard, you tend to just need to be pissed in order to keep fighting longer than the average soldier.
He's forcing his own enemy Adjutant into the air with a shockwave, the blue energy field just barely fading around his body before he explodes forward to hit the creature with a biotic charge. His momentum carries him and his shredded foe into the line of sight of Conner, and Shepard is there just in time to witness the death of another enemy.
They're mostly safe at the moment, so he takes a moment to catch his breath and check his shotgun while Conner finishes off his opponent.]
awwwyeh
He's forcing his own enemy Adjutant into the air with a shockwave, the blue energy field just barely fading around his body before he explodes forward to hit the creature with a biotic charge. His momentum carries him and his shredded foe into the line of sight of Conner, and Shepard is there just in time to witness the death of another enemy.
They're mostly safe at the moment, so he takes a moment to catch his breath and check his shotgun while Conner finishes off his opponent.]