Perhaps this has already been posted elsewhere, but I feel that the Xenomorph (and Neomorphs) should have stamina as part of their stat-block for the purposes of the decompression rules.
This necessity came up in play when a bulkhead was breached by a stray bullet. I felt that even a Neomorph might lose a fact action (as per the rules for humans) for a stamina roll or to 'stay on their feet' in general when the air was leaving the compartment. I decided to give them 8 stamina for the purposes of this.
How have other Gms handled this or am I missing something?