ACID REFLUX is the last of three Klues that can be found in the Tarkatan Colony Mesa of Mortal Kombat 1's Invasions Mode. Completing it is fairly simple, though only if players are able to solve the Klue and figure out what exactly is being asked of them. Thankfully, most players should have very little trouble doing so, as the solution involves a very common medical condition that many players will be familiar with.