Mutant bug

The Mutant Bug is a random encounter that can pop up when exploring outside of your Camp. You may get anywhere between a 2x4-5x4 layout. 1/4 of the spaces are labeled "Hit", while all the others are labeled "Miss". You need to hit all of the "Hit" spaces to win. If you are a Wanderer unlucky enough to hit a tile labeled "Miss", you gain 5 Radiation. You actually don't lose any health while fighting unless your new Max HP adjusted for radiation is less than your current HP. The Cystic Mutation trivializes this fight so no matter how unlucky you are, you are guaranteed to lose 0 HP and gain 0 Radiation, thanks to its immunity to radiation, and thus immunity to lowering Max HP below current one.