The one merc says, "[He's] gonna be pissed when he wakes up, eh!" (I get the feeling they've been through something like this before.) And then the other one says something that I've listened to over and over, and still can't figure out. It almost sounds like he's talking about legs getting cut off. Anybody speak South African? (Afrikaans, Pretorian, whatever.)
In the script, Kruger complains about his new skin looking like a baby's, and then uses the broken mirror to cut his face up to add character. (In the Chinese release of the movie, you don't see his face getting blown off, or any of the damage other than on the med bay monitor.)