The character has six weapon slots, they are switched by hotkeys from 1 to 6. If there are several types of weapons for a slot, they change cyclically when the key is pressed again.
1 - unarmed attack
2 - knives
3 - blunt weapon
4 - pistols
5 - rifles
6 - big guns.
Attacking with each weapon requires stamina. Melee weapons deal high damage, but also drain stamina. Ranged weapons consume little stamina, but require ammo consumption.
A punch is a weapon that is always with you, it cannot be sold or lost.