The Combat Challenge achievement of the 5 Challenge Achievements is by far the hardest individually. And that's for a few reasons. 1. There are more challenges than the others, so from a purely numbers perspective, having to do 26 Combat Challenges is going to take more time; and 2. Because of the Ninja Combat Challenge - which we'll tackle on its own shortly.

First things first though, like the Weapon Challenges in Variety is the Spice of Death (50G), you're going to need to vary your playstyle a bit throughout your playthrough so that you aren't grinding out in the end. That means killing zombies with bleed weapons, killing them with caustic damage, shock damage and fire damage, and making enemies 'soggy' with water - let's call those the elemental challenges.

There's also specific zombie challenges in here too to take note of, like interrupting a Butcher when it's feeding, maim 5 Crusher arms, slaying 1 Mutator before it mutates (see Not Even My Final Form (10G)), interrupt 5 Screamers while they're screaming and slay 5 Slobbers with melee attacks.

Then, aside from that, you'll need to do a whole variety of other challenges. The truth is, they'll come naturally though. A few that might not. Firstly, Impressive Aim, which requires you throwing a weapon 35+m and hitting a zombie (see Donk! (10G)); and then there's the Ninja Combat Challenge, which requires dismembering 3 zombies with a single Shuriken throw.

First things first, you need to grab the Shuriken - see our Dead Island 2 Curveball guide for assistance there. Let's talk about what you need to do to accomplish the Ninja Combat Challenge. Well, the first thing you need to do is to finish the Weapon Challenge, "Batter Up!" which when you get to level 3 gives you a persistent stat boost for your Curveballs ("Equipped Curveball Damage +++" to be precise). Then, what you want to do is find some shamblers and walkers (the Halperin Hotel and the Venice Beach regions are decent for these), and then weaken them somewhat. Then, get them all in a bunch and throw the Shuriken. Chances are this will take more than a few attempts, but this is by far the best strategy to complete the Ninja Challenge.

We've created an in-depth Dead Island 2 Ninja Challenge guide if you need it, and we talk about the prep, and where to do it and what not. We've tried and tested our strategy multiple times and it works like a dream.