train0:	skill 1/2 chainsaw
	skill 3	berserk
train1: skill 1/2 doubleshotgun
	skill 3 shotgun
train2: skill 1/2 plasmagun
	skill 3 chaingun
train3:	skill 1/2 BFG
	skill 3 rockets

In skill 2 the health goes down faster but you have only half the ammo
All players have the same weapons: fair learning of defending/fragging