Ok, you're looking at the RM2 book. Vacuum criticals are in RoCo 6. If you don't have it, impact is the most sensible replacement.
RoCo 3 has plasma, acid, physical alteration, depression, stress, shock, disruption. RoCo 4 has disintegration, essence, neuro, shrapnel, starvation/dehydration, stun, vibration.