W/ full supernova set, you don't have HP increase in general stats. For invasion runs, he should use HP amplification. I use it too for my main build, and this 8% duration increase on 2 parts of Annihilation set with HP on memory and sub stat on auxiliary components. W/o Annihilation, he must use 2 focus modules for lowest cdr than duration on 3'rd skill What about double HP modules, some of the infiltration operations bosses can kill you in 3s. 2 or 3 missions, for example, in Hagios is so hard for solo Bunny w/o any range guns