How to kill people easily?

My MC is weak and just practical at the start when they start killing so I need simple easy ways to kill people. They do own a gun and an axe if that helps. They also have three screws, a yard of yarn, two pillows, and a lighter. Can guns kill people? I heard that they're not strong. I haven't seen one in real life, but I watch my brother play Bloodborne and the gun did like 2 damage. So that's probably about accurate. My MC needs to be deadlier than that. But also still a weak, pathetic, sniveling, cowardly, disgusting troglodyte, who couldn't wrestle themself out of a paper bag. Conundrums!