Diablo 4 is getting a popular gameplay system from Diablo 3 for its upcoming Season 12–killstreaks.
Originally introduced in Diablo 3, killstreaks reward players for racking up a large number of kills in quick succession, with stacking XP bonuses for how high a player’s killstreak climbs.
The system will be largely the same in Diablo 4 (minus rewards for destroying breakable objects or killing enemies with the environment, as in Diablo 3). There will be five tiers of killstreaks players will be able to earn, with increased XP and seasonal reputation bonuses based on the highest tier achieved during the streak. Those five tiers are:

