Hmmm... odd... since i just tried arming a crysalis with a blaster just to try if i was wrong
I works.. just place the Crys. ontop of a blaster, go to a random soldier, click his properties, select next char. util you come to the Crys, pick the blaster up from the ground, and BANZAI! perfect suecide-squad... usualy have 1 with Heavy plasma och one with blaster in backpack (no reaction-fire here
infront of my storm-squad when taking on bases..
Regarding heavy plasma... i also recall sometime the walls gave after to a hit, but it's not common.. Blaster is the prefered way...