Strider Fight Tips
Here’s the easiest way to clear that mission I found:
The laser is blocked by large obstacles. There are a few big pole things on the way that will act as cover.
Once you knock out the knee (you have to get to the side and can’t go from behind) you can hug the body when it fires to avoid blasts while you take out the generators.
Once those are done, you go all the way forward, coming up next to it and you can dodge in close and stay to its side when it fires. Then it can’t hit you. After it fires, just step out and unload into the middle, rinse, repeat, finish.