@Fro5stBurn
Well, they did say that the golems are made of dirt. And if we assume that they hold no regenerative capabilities, then bullets would easily be able to tear through 50 golems pretty quickly. The question is if Ike is just gonna spam golems with guns.
That's a problem. Guns are, in this case, it seems he's using a rifle or musket of sorts, very unreliable. They jam, they break easily, and it's slow to reload. To compensate for that, he either needs 10 golems with some way to block attacks before they reach the Riflegolems and 10 golems to hold the line.