These are the most common type of enemy on Banoi, and you will encounter them since the very beginning. Walkers are what you’ll be fighting most of the time and, later on, there will be tougher encounters. The undead will be your most difficult foes in the game, with the hardest one having as much as 12000 HP (in its highest levels). The enemies are listed in order of difficulty, being determined by the enemy’s overall health at level 1.
Infected – All zombies will try to cling onto you, if they catch you, and attempt to chew on your face. Infected are no exception; the fact that they spot you from farther away and run towards you in erratic fashion, makes them difficult to avoid at times. Luckily they are easy to kill, particularly if you have a shotgun or similar weapon. Recently infected people look fairly normal from far away, making the distinction somewhat more difficult.
Suiciders – Suiciders have mutated strangely, and are bloated with gases. They explode when attacked, so you should always do it from a distance, by throwing weapons, explosives or shooting. They can actually be useful in taking out a horde of surrounding walkers or similar. You will likely first encounter one during the “Black Hawk Down" quest, in Chapter 3 of Act 1.
Walkers – The most common type of zombie who, unlike Infected, cannot run towards you, and only crawl at slow pace like good old fashioned rotten-goons. Walkers can attack with weapons too by throwing them from a distance, and at times you’ll see one emanating noxious fumes which can cause you to cough and stop attacking. The fact that they are always in groups makes the fight tiresome, but they are always easy to kill with a blast to the head, or by kicking them down to the floor.
Floater – You’ll first see this nasty when you enter the sewers beneath Moresby, in “Let the waters flow" which is part of the main quest. Floaters spit toxic waste at you, a bit like the Lying Figures in Silent Hill 2, and it is wise to dodge the noxious puddle and attack from a distance. Save your ammo for these lovelies and make sure you don’t go near them.
Thugs – You will encounter your first Thug in the Lifeguard Tower, if you are doing “Exodus" in Act 1. Thugs are slower than Walkers, have more HP and are powerful if they hit you. Don’t let them connect or get ready to get knocked down to the floor.
Ram – You’ll meet a Ram in the church at the beginning of Act 2. Rams charge at you as soon as they spot you, so it is good to time your dodge and attack them when they are stunned. Stand somewhere like a wall or gate, let them hit, and while they are stunned attack the back of their head. Never attack a Ram from the front as it's useless.
Butcher – These are hard to kill and they can dodge and counterattack to boot. You’ll find them in the Jungles of Banoi, precisely the "Chasing Shadows" quest in Afram's camp. It’s a good idea to use modded weapons and fury attacks with the Butcher, though masters of melee and close-quarter combat can attempt to give it a run for its money.