So basically DON'T TAKE OFF YOUR SUIT! ... He is FUCKED! ... He could always hide, I feel like if he just doesn't actively go searching to kill the aliens he won't get messed up.
It's troublesome that Kurono wasn't given a suit for the new mission since he already got one even if it was left behind back in his apartment. He'll have to work extra hard since the next target's said to be strong.