Mother Russia Bleeds

Mother Russia Bleeds has beat 'em up-style gameplay often compared to those of Streets of Rage and Double Dragon. The players are set to fight through side-scrolling, stage-by-stage levels, using guns, melee weapons or their bare fists to take out enemies. When killed, some enemies start convulsing. Players may fill their syringes with the drug from these enemies' corpses, which can then be injected to refill health or to go into berserk mode, which adds strength and speed to the player.

Source: Wikipedia, "[en.wikipedia.org/wiki/Mother_Russia_Bleeds Mother Russia Bleeds]", available under the CC-BY-SA License.