Catch This

Catch This is an achievement in Halo: The Master Chief Collection. It is unlocked by earning a total of 500 Grenade Kill or Plasma Kill medals in multiplayer matchmaking. Strangely, Grenade Stick kills do not count towards the achievement, except in Halo 4 multiplayer matches. The achievement is worth 10 Gamerscore.

Tips
Players attempting to unlock the achievement should avoid playing Halo 3 and Halo: Reach multiplayer matches, as they are the only games in the Collection which do not award either of the medals required.