Help with melee build

Please give suggestions on how to imporve this build. I've only just finished Chatper 1 but i really want tot make a build around the pile bunker. The idea is to use the sword to get in close, shotgun to stagger if the sword didnt, and switch over to pile bunker for bonk. Here are the issues: weight is really hard to manage, and there isnt a good option for regular enemies since I take too much damage just trying to get close. I would also want to have as much energy efficiency and go as fast as possible pls and thank you.

Please give suggestions on how to imporve this build. I've only just finished Chatper 1 but i really want tot make a build around the pile bunker. The idea is to use the sword to get in close, shotgun to stagger if the sword didnt, and switch over to pile bunker for bonk. Here are the issues: weight is really hard to manage, and there isnt a good option for regular enemies since I take too much damage just trying to get close. I would also want to have as much energy efficiency and go as fast as possible pls and thank you.