I search for solutions in this order: Past Code, Unreal Source, Wiki, BUF, groups.yahoo, google, screaming at monitor. – RegularX
Legacy:Actor Class Hierarchy (DX)
From Unreal Wiki, The Unreal Engine Documentation Site
Actor +- Augmentation | +- AugAqualung | +- AugBallistic | +- AugCloak | +- AugCombat | +- AugDatalink | +- AugDefense | +- AugDrone | +- AugEMP | +- AugEnviro | +- AugHealing | +- AugHeartLung | +- AugIFF | +- AugLight | +- AugMuscle | +- AugPower | +- AugRadarTrans | +- AugShield | +- AugSpeed | +- AugStealth | +- AugTarget | +- AugVision +- AugmentationManager +- BarkManager +- Brush | +- Mover | +- DeusExMover | | +- BreakableGlass | | +- BreakableWall | +- ElevatorMover | +- MultiMover +- ColorTheme | +- ColorThemeHUD | | +- ColorThemeHUD_Amber | | +- ColorThemeHUD_Cops | | +- ColorThemeHUD_Cyan | | +- ColorThemeHUD_DarkBlue | | +- ColorThemeHUD_Default | | +- ColorThemeHUD_DesertStorm | | +- ColorThemeHUD_DriedBlood | | +- ColorThemeHUD_Dusk | | +- ColorThemeHUD_Grey | | +- ColorThemeHUD_IonStorm | | +- ColorThemeHUD_Nightvision | | +- ColorThemeHUD_Ninja | | +- ColorThemeHUD_PaleGreen | | +- ColorThemeHUD_Pastel | | +- ColorThemeHUD_Plasma | | +- ColorThemeHUD_Primaries | | +- ColorThemeHUD_Purple | | +- ColorThemeHUD_Red | | +- ColorThemeHUD_SoylentGreen | | +- ColorThemeHUD_Starlight | | +- ColorThemeHUD_SteelGreen | | +- ColorThemeHUD_Superhero | | +- ColorThemeHUD_Terminator | | +- ColorThemeHUD_Violet | +- ColorThemeMenu | +- ColorThemeMenu_Blue | +- ColorThemeMenu_BlueAndGold | +- ColorThemeMenu_CoolGreen | +- ColorThemeMenu_Cops | +- ColorThemeMenu_Cyan | +- ColorThemeMenu_Default | +- ColorThemeMenu_DesertStorm | +- ColorThemeMenu_DriedBlood | +- ColorThemeMenu_Dusk | +- ColorThemeMenu_Earth | +- ColorThemeMenu_Green | +- ColorThemeMenu_Grey | +- ColorThemeMenu_IonStorm | +- ColorThemeMenu_Lava | +- ColorThemeMenu_NightVision | +- ColorThemeMenu_Ninja | +- ColorThemeMenu_Olive | +- ColorThemeMenu_PaleGreen | +- ColorThemeMenu_Pastel | +- ColorThemeMenu_Plasma | +- ColorThemeMenu_Primaries | +- ColorThemeMenu_Purple | +- ColorThemeMenu_Red | +- ColorThemeMenu_Seawater | +- ColorThemeMenu_SoylentGreen | +- ColorThemeMenu_Starlight | +- ColorThemeMenu_Steel | +- ColorThemeMenu_SteelGreen | +- ColorThemeMenu_Superhero | +- ColorThemeMenu_Terminator | +- ColorThemeMenu_Violet +- ColorThemeManager +- ConPlayBark +- ConPlayBase | +- ConPlay | +- DataLinkPlay +- DamageType +- Decal | +- DeusExDecal | | +- AmbrosiaPool | | +- BloodPool | | +- BloodSplat | | +- BulletHole | | +- BurnMark | | +- ScorchMark | | +- WaterPool | +- Shadow +- Decoration >> (expanded in Decoration Class Tree +- Effects | +- AirBubble | +- AnimatedSprite | | +- ExplosionLarge | | +- ExplosionMedium | | +- ExplosionSmall | +- BloodSpurt | +- EllipseEffect | +- Fire | | +- SmokelessFire | +- LaserEmitter | | +- ElectricityEmitter | +- LaserProxy | +- LaserSpot | +- MoverHighlight | +- MuzzleFlash | +- ParticleGenerator | | +- WaterDrips | +- ParticleProxy | +- PawnGenerator | | +- Fish2Generator | | +- FishGenerator | | +- FlyGenerator | | +- PedestrianGenerator | | +- PigeonGenerator | | +- RatGenerator | | +- SeagullGenerator | +- ProjectileGenerator | +- ShieldEffect | +- ShockRing | +- SmokeTrail | +- Spark | +- SphereEffect | | +- InvulnSphere | +- TrashGenerator | +- WaterRing +- HUD +- Info | +- DeusExLevelInfo | +- GameInfo | | +- DeusExGameInfo | | +- DeusExMPGame | | +- DeathMatchGame | | +- TeamDMGame | | +- AdvTeamDMGame | | +- BasicTeamDMGame | +- InternetInfo | | +- InternetLink | | +- TcpLink | | | +- UBrowserBufferedTcpLink | | | +- DeusExGSpyLink | | | +- UBrowserGSpyLink | | | +- UBrowserHTTPClient | | | | +- UBrowserUpdateServerLink | | | +- UBrowserHTTPLink | | | +- UBrowserIRCLink | | +- UdpLink | | +- DeusExLocalLink | | +- DeusExServerPing | | +- UBrowserLocalLink | | +- UBrowserServerPing | | +- UdpBeacon | | | +- ClientBeaconReceiver | | +- UdpServerQuery | | +- UdpServerUplink | +- KillerProfile | +- LocalMessage | +- MapList | | +- DXMapList | +- MissionScript | | +- Mission00 | | +- Mission01 | | +- Mission02 | | +- Mission03 | | +- Mission04 | | +- Mission05 | | +- Mission06 | | +- Mission08 | | +- Mission09 | | +- Mission10 | | +- Mission11 | | +- Mission12 | | +- Mission14 | | +- Mission15 | | +- MissionEndgame | | +- MissionIntro | +- Mutator | +- ReplicationInfo | | +- GameReplicationInfo | | +- PlayerReplicationInfo | +- SavedMove | +- ScoreBoard | +- StatLog | | +- StatLogFile | +- TestInfo | +- VoicePack | +- ZoneInfo | +- LevelInfo | +- SkyZoneInfo | +- WarpZoneInfo | +- WaterZone +- Inventory >> (expanded in Inventory Class Tree +- Keypoint | +- AmbientSound | | +- AmbientSoundTriggered | +- BlockAll | +- BlockMonsters | +- BlockPlayer | +- CameraPoint | +- InterpolationPoint | +- LocationID | +- MoverCollider | +- PickupDistributor | +- RandomEvents | +- RandomSounds | +- SequenceEvents | +- Timer | +- WayBeacon +- Light | +- Beam | +- ConLight | +- ExplosionLight | +- HighLight | +- Spotlight | +- TriggerLight +- Menu +- MPPlayerTrack +- NavigationPoint | +- AmbushPoint | +- ButtonMarker | +- HidePoint | +- HomeBase | +- InventorySpot | +- LiftCenter | +- LiftExit | +- MapExit | +- PathNode | +- PatrolPoint | +- PlayerStart | +- SpawnPoint | +- Teleporter | +- TriggerMarker | +- WanderPoint | +- WarpZoneMarker +- Pawn >> (expanded in Pawn Class Tree +- Projectile | +- DeusExProjectile | | +- Cloud | | | +- HalonGas | | | +- PoisonGas | | | +- TearGas | | +- Dart | | | +- DartFlare | | | +- DartPoison | | +- Fireball | | | +- FireballRocket | | +- GraySpit | | +- GreaselSpit | | +- HECannister20mm | | +- PlasmaBolt | | +- Rocket | | | +- RocketLAW | | | +- RocketMini | | | +- RocketRobot | | | +- RocketWP | | +- Shuriken | | +- ThrownProjectile | | | +- EMPGrenade | | | +- GasGrenade | | | +- LAM | | | +- NanoVirusGrenade | | | +- SpyDrone | | +- Tracer | | +- SniperTracer | +- Fragment | +- DeusExFragment | +- BloodDrop | +- FireComet | +- FleshFragment | +- GlassFragment | +- MetalFragment | +- PaperFragment | +- PlasticFragment | +- Rockchip | +- ShellCasing | | +- ShellCasingSilent | +- ShellCasing2 | +- SuperBall | +- WoodFragment +- Skill | +- SkillComputer | +- SkillDemolition | +- SkillEnviro | +- SkillLockpicking | +- SkillMedicine | +- SkillSwimming | +- SkillTech | +- SkillWeaponHeavy | +- SkillWeaponLowTech | +- SkillWeaponPistol | +- SkillWeaponRifle +- SkillManager +- SmellNode +- SpawnNotify +- TraceHitSpawner | +- TraceHitHandSpawner | +- TraceHitNonPenSpawner | +- TraceHitHandNonPenSpawner +- Triggers +- Counter +- Dispatcher +- MusicEvent +- RoundRobin +- SpecialEvent +- Trigger +- AllianceTrigger +- BeamTrigger +- ConversationTrigger +- DamageTrigger +- DataLinkTrigger +- DirectionalTrigger +- FadeViewTrigger +- FlagTrigger +- GoalCompleteTrigger +- InterpolateTrigger +- LaserTrigger +- LogicTrigger +- OrdersTrigger +- SenseTrigger +- SequenceTrigger +- ShakeTrigger +- SkillAwardTrigger +- UnTrigger +- ZoneTrigger