I can’t remember what the enemies are actually called, but the zombie dudes and the army dudes are the ones I always glory kill for health. I usually try to whittle them down with the rifle so I don’t accidently kill them before they go all flashy. Other than that, I just try to keep moving around the map, and review the codex entry for each enemy type so I know which weapon is best against them.
Have fun! I love this game.
You just described SAP as well.