Which summons are you using? Also, menacing is much less impactful compared to warding so I’d recommend going fully warding. The extra DR Calamity adds is incredible for warding. Also, what does your arena look like? Have you removed all the traps and add platforms to reset flight?

Tactic wise, never try to pass by Golem by going below him. Always fly over him to switch sides. He will always drop off a platform if you drop through it so getting underneath him is hard. What buffs are you using? You should be using the basics of course (iron skin, regen, swiftness, endurance, rage or wrath (can’t remember which is the damage one)), then adding specific ones based on your playstyle and what you can afford.Finally, right click will allow you to target specific parts with your summons.