How are autofire and explosives treated by the rules?
Answer Corporation has a classification called Machine Weapons. Imagine a machine weapon deals 6D6 damage. You can effectively split that 6D6 over as many targets as there are damage dice (in this case 6) as long as they relatively near one another. For example, 1D6 to six separate targets (representing a spray), or 6D6 to a single target which will more than likely kill them. Explosives have a blast range (e.g. 6 metres) and a damage (e.g. 6D10). Depending how accurate your throw was, the target takes one third, two thirds or all of the damage. Damage on explosives is always divisible by 3. You can also use the blast range to work out damage to buildings and other nearby parties if you need to.
