I think missing field in lol match v5 api response.
This is "challenges" field in Match Participant.
{
...
"challenges": {
"12AssistStreakCount": 0,
"abilityUses": 168,
"acesBefore15Minutes": 0,
"alliedJungleMonsterKills": 0,
"baronTakedowns": 0,
"blastConeOppositeOpponentCount": 0,
"bountyGold": 0,
"buffsStolen": 0,
"completeSupportQuestInTime": 0,
"controlWardTimeCoverageInRiverOrEnemyHalf": 0.05215168915369436,
"controlWardsPlaced": 3,
"damagePerMinute": 529.0015434423793,
"damageTakenOnTeamPercentage": 0.22122323997443094,
"dancedWithRiftHerald": 0,
"deathsByEnemyChamps": 5,
"dodgeSkillShotsSmallWindow": 39,
"doubleAces": 0,
"dragonTakedowns": 0,
"earlyLaningPhaseGoldExpAdvantage": -0.06373274326324463,
"effectiveHealAndShielding": 0,
"elderDragonKillsWithOpposingSoul": 0,
"elderDragonMultikills": 0,
"enemyChampionImmobilizations": 35,
"enemyJungleMonsterKills": 0,
"epicMonsterKillsNearEnemyJungler": 0,
"epicMonsterKillsWithin30SecondsOfSpawn": 0,
"epicMonsterSteals": 0,
"epicMonsterStolenWithoutSmite": 0,
"flawlessAces": 0,
"fullTeamTakedown": 0,
"gameLength": 1614.2859992416377,
"getTakedownsInAllLanesEarlyJungleAsLaner": 0,
"goldPerMinute": 338.45626803455053,
"hadAfkTeammate": 0,
"hadOpenNexus": 0,
"highestCrowdControlScore": 1,
"immobilizeAndKillWithAlly": 3,
"initialBuffCount": 0,
"initialCrabCount": 0,
"jungleCsBefore10Minutes": 0,
"junglerTakedownsNearDamagedEpicMonster": 0,
"kTurretsDestroyedBeforePlatesFall": 0,
"kda": 1.6,
"killAfterHiddenWithAlly": 1,
"killParticipation": 0.2,
"killedChampTookFullTeamDamageSurvived": 0,
"killsNearEnemyTurret": 1,
"killsOnOtherLanesEarlyJungleAsLaner": 0,
"killsOnRecentlyHealedByAramPack": 0,
"killsUnderOwnTurret": 0,
"killsWithHelpFromEpicMonster": 0,
"knockEnemyIntoTeamAndKill": 2,
"landSkillShotsEarlyGame": 3,
"laneMinionsFirst10Minutes": 68,
"laningPhaseGoldExpAdvantage": -0.08101105690002441,
"legendaryCount": 0,
"lostAnInhibitor": 0,
"maxCsAdvantageOnLaneOpponent": 5,
"maxKillDeficit": 0,
"maxLevelLeadLaneOpponent": 1,
"moreEnemyJungleThanOpponent": -102.00000002980232,
"multiKillOneSpell": 0,
"multiTurretRiftHeraldCount": 0,
"multikills": 0,
"multikillsAfterAggressiveFlash": 0,
"mythicItemUsed": 6662,
"outerTurretExecutesBefore10Minutes": 0,
"outnumberedKills": 0,
"outnumberedNexusKill": 0,
"perfectDragonSoulsTaken": 0,
"perfectGame": 0,
"pickKillWithAlly": 7,
"poroExplosions": 0,
"quickCleanse": 0,
"quickFirstTurret": 0,
"quickSoloKills": 0,
"riftHeraldTakedowns": 0,
"saveAllyFromDeath": 0,
"scuttleCrabKills": 0,
"skillshotsDodged": 9,
"skillshotsHit": 25,
"snowballsHit": 0,
"soloBaronKills": 0,
"soloKills": 0,
"soloTurretsLategame": 1,
"stealthWardsPlaced": 3,
"survivedSingleDigitHpCount": 0,
"survivedThreeImmobilizesInFight": 6,
"takedownOnFirstTurret": 0,
"takedowns": 8,
"takedownsAfterGainingLevelAdvantage": 0,
"takedownsBeforeJungleMinionSpawn": 0,
"takedownsFirst25Minutes": 7,
"takedownsInAlcove": 0,
"takedownsInEnemyFountain": 0,
"teamBaronKills": 0,
"teamDamagePercentage": 0.2184990967612713,
"teamElderDragonKills": 0,
"teamRiftHeraldKills": 0,
"threeWardsOneSweeperCount": 0,
"tookLargeDamageSurvived": 0,
"turretPlatesTaken": 2,
"turretTakedowns": 1,
"turretsTakenWithRiftHerald": 0,
"twentyMinionsIn3SecondsCount": 0,
"unseenRecalls": 0,
"visionScoreAdvantageLaneOpponent": 1.0371013879776,
"visionScorePerMinute": 0.7207488146496799,
"wardTakedowns": 5,
"wardTakedownsBefore20M": 2,
"wardsGuarded": 0
}
...
}