OOC:
As pointed out by Hraefn, you all do have a d8 inspiration point to spend, so I assume Gothred would spend it here to pass his save. You would need just a 1 to do so. That said, here is the modified version of my original post.
As you all react to the golem before you, the entire cell block becomes filled with a similar gas that was used in your earlier encounter with them. A nauseating smell exudes from it, and though you all try to cover your faces and avoid breathing in, you are too late. Einar feels a bit light-headed, as do Hraefn, Gothred and Sonja, but you all manage to shake off the drowsing effects of the smoke.
Not so fortunate is Graxif, who succumbs to the sleep-effect of the gas. Einar growls at the golem, teeth smiling in a snarl at having overcome the effects of its attack, only to be doused with a clear liquid. Your chest tightens, followed by your arms, legs and finally your face, which stays in a half-smile, half-snarl contorted mask as you find yourself paralyzed in place.
"Cease attempted escape. Return to containment. Interrogation pending arrival of commandant." the creature squawks out at the survivors, Hraefn, Gothred, Bram and Sonja.
Shaking off the effects, the Geoff paladin charges the golem, his long sword bursting into light as he strikes down on the thing. The first blow cleaves deeply into the metal, and he yanks the blade out to finish the job, but the lighting-fast tentacled arms of the alien creature manage to deflect the blow away.
OOC:
For game purposes, a CRIT is automatic double of your damage, so you don't need to edit and add more rolls. That said, your first strike is a critical: 8 for the blow, 12 for the Hunter's Mark and 30 for your smite: a total of 50 damage to the golem. Second blow misses.