The Field Supplier goes on a cooldown aftter use so keep that in mind.
#Apb reloaded cars mod
You can resupply yourself with more grenades if you run to a Joker Ammo machine but that may not always be possible so you can also use the Field Supplier with the left d-pad which is a character mod that you acquire from doing the tutorial. Like I said above grenades are super weak and you can only carry two of them.
While this is the most obtained achievement out of them all it's really not that easy. Now if you're not going to have another person intentionally sit there while you throw grenades, things become much harder. Make sure not to be in a group with other players unless they're boosting with you as they may get in the way of things. Then either player can go finish up the mission. Once the first person is dead the other person can jump in a vehicle for the other person to blow up if they need the achievement too. Grenades are very weak, so you may want to shoot the car a little bit till the hood of the vehicle is visibly dent, it's also a good idea if the person that is going to get blown up is in a normal car as opposed to something like the armored van or a cement mixing truck. Instead have whoever is going for the achievement be outside of the car while the other person throws their grenades with. The Criminal need to steal a car and while they're doing that the Enforcer needs to aim their gun and when their reticle turns orange press down on the d-pad and this will start a Bounty mission. Luckily Enforcers (these are the cop players) can force a mission on Criminals by "Witnessing" them doing a crime. Now normally you can search for a random mission by pressing up on the d-pad but this would guarantee that you and your boosting partner on the opposite faction will get put into the same mission even if you search at the same time because missions will start for other people with less than the maximum amount or people will drop out and that means either one of you could be put into a already in-progress mission while the other player gets put into a different mission. Multiple people can habitat the same server but be doing different missions.
Now straight from the get go you can't just fight anyone on a server. Text chat can be done by pressing start and finding the chat option on the left side. If you have someone help you that can either be with a friend or you can use the in-game chat to try and communicate to random players. You acquire grenades by following the in-game tutorial. Okay so a few ways go about getting this achievement, the top two being having someone help you or just random luck.