Sniper: Ghost Warrior 2
37 Achievements
20-25h
Hazardous Materials
Kill three or more enemies by shooting a grenade
18.2%
How to unlock the Hazardous Materials achievement in Sniper: Ghost Warrior 2 - Definitive Guide
Near the end of the mission Anderson will mention you can use the guy as bait, you shoot him and wait for other enemies to crowd around him.
One guy will have a grenade attached to his belt, shoot it.
At the start you and your spotter double kill with knives then venture up a building to overlooking an enemy camp.
Take out the two enemies on the first floor walkway (one straight over on the far side, the other on the left) then immediately below is a group of three round a campfire. The middle one has a grenade on his belt. Shoot this and the achievement is yours.
Perhaps the main advantage with this over the other solution is that it is only about 2-3 minutes into the level.
Good luck!
ACT 1
Mission 2
From Out Of Nowhere
Around 3/4 of the way through you will be advised to take out the sniper on the roof in order to sneak past the rest of the enemies, after this you will have an enemy directly in front, and your character will say that they can be used as a distraction - After you have killed them 3 of his friends will investigate - You will be told that the grenade one is carrying around his waist will make a perfect trap - Take aim, hold breath, zoom in if nessecary and fire at the glowing grenade... I obtained this on Casual difficulty not sure if the grenades glow on harder difficulties
This can be done in Act 1 mission 2. You will get to a point where you will have to use stealth to get past the enemies after walking through a cave to reach the observation tower. Shoot the sniper patrolling the roof top so you can sneak past the enemies. Crouch your way past the enemies. You will then reach a point where you will shoot am enemy to cause a distraction. This will make three enemies run over to investigate. One of the soldier will be carrying a grenade; shoot the grenade when told and it will take out the three enemies around him.
There are several spots in the campaign that you can do this in, however the easiest spot is towards the end of mission 2 (From Out Of Nowhere). Your character suggests to himself to shoot the enemy’s grenade while the enemy is standing next to 2 additional enemies.
The enemy’s grenade will glow orange so it is very easy to see, all you have to do is empty your lungs and shoot it. If you’re playing on hard, make sure to take your time when shooting it. If you fail to hit the grenade, or kill the enemy that has the grenade, simply reload the checkpoint and try again. Once you’ve killed the 3 enemies, the trophy will pop. Please refer to the video below if you want to see it being done.
https://www.youtube.com/watch?v=v7uoyK-6yPM
https://www.youtube.com/watch?v=rfdfxpAEUjY