1. You can buy a
shahid belt, you will be given a red nickname to notify the players that you're wearing one, then you can suicide bomb yourself near enemy players. The price of it should depend on the damage the explosion causes, but I suggest it to make it 90 or 100+ damage and make it cost something similar to grenades. (Considering you get multiple grenades but you need to use a few of them to kill someone, the belt should be insta kill for a few players around you.) There should be also a time limitation before you receive the vest, so that players who are about to get killed suddenly dont buy it &explode themselves with keybinds.
2. You can purchase a
car bomb, works only when inside a vehicle already, a 5 second timer will go off causing a massive chain explosion, a powerful way to push back enemy forces from your base for example when it's under siege. Should cost a bit, is it possible to make kill logs work on it as well?
https://www.youtube.com/watch?v=OpRce2tAwZM&feature=youtu.be3. You can buy a
landmine, once planted anyone can detonate it by simply firing at it (if walking into it is not possible to detect as it would prolly cause lag) way more useful than remote grenades, since detonating one with an Ingram would be way faster.