Am I underleveled or am I just shit?-W4R-D3N

Im trying to defeat W4R-D3N and I'm level 14 with Barking Sniper that does 132 damage,Electrified Aegis which is a pistol that does 60 damage and Royal Home security shotgun which does 42x6 damage.Am I underleveled or bad?What do I do?I'm getting extremely frustrated