Last soldier

The front line has collapsed, and the main body of my unit is retreating to safety. I have been left behind to hold this position alone. With only my weapon and this fortified basement, I am the final wall against the approaching battalion. My mission is not to survive; it is to buy them time. Every second I hold this line is a second they live." Does this match the gravity and tone you want for your character, or would you like to make the situation feel even more urgent.