One particular puzzle requires the player to resuscitate an injured comrade by blowing into the built-in microphone.

As she came round to the screams of her injured comrades, the young medic knew exactly what she had to do.

But, ignoring her wounds, she started to give lifesaving first aid to her seven injured comrades.

Simpler to put on and remove than weighted vests, it simulates how humans carry things, like young or injured comrades or camping supplies, rather than the storage of body fat.