a.k.a. Bleipumpe
Str8 Outta Stolberg

100% Achievements Games:

Age of Empires: Definitive Edition
Age of Empires II: Definitive Edition
Age of Empires II (2013)
Age of Empires IV: Anniversary Edition
Age of Mythology: Extended Edition
Alien Isolation
Alien Swarm
Alien Swarm - Reactive Drop
Aliens: Colonial Marines
Aliens vs. Predator
ARK: Survival Evolved
Arcade Classics: Ms. Pac-Man
Arcade Classics: Pac-Man
Battlefield 4
Black Mesa
Blood: Fresh Supply
Broforce
Carmageddon: Reincarnation
Chivalry: Medieval Warfare
Command & Conquer Remastered Collection
Counter-Strike 2
Counter-Strike: Global Offensive
Counter-Strike: Source
Crimsonland
Day of Defeat: Source
Day of Infamy
Deadlight
Doom
Doom 3: BFG Edition
Drunken Wrestlers 2
Duke Nukem 3D: 20th Anniversary World Tour
Duke Nukem 3D: Megaton Edition
Fallout Shelter
Fly Simulator
Fire Pro Wrestling World
Garfield Kart - Furious Racing
God's Trigger
Gunpoint
Half-Life 2
Half-Life 2: Episode 1
Half-Life 2: Episode 2
Hand Simulator
Human: Fall Flat
Keen Dreams
Left 4 Dead
Left 4 Dead 2
Mordhau
Narco Terror
Nation Red
No More Room In Hell
Portal
Portal 2
Postal
Quake
Quake II
Quake Champions
Raptor: Call of the Shadows - 2015 Edition
Rise of the Triad
Serious Sam Classics: Revolution
Serious Sam HD: The First Encounter
Serious Sam HD: The Second Encounter
Shadow Warrior
Shadow Warrior Classic Redux
Shaolin vs Wutang
Snakeybus
South Park: The Stick of Truth
Starbound
Steamworld Dig
Stranded Deep
Team Fortress 2
Terraria
The Forest
The Incredible Adventures of Van Helsing
Thief
Transmissions: Element 120
Turok: Dinosaur Hunter
Turok 2: Seeds of Evil
Verdun
Viscera Cleanup Detail: Santa's Rampage
Viscera Cleanup Detail: Shadow Warrior
Yet Another Zombie Defense

Non-Achievement Games completed:

Aliens vs Predator Classic 2000
Blood: One Unit Whole Blood
Blood II: The Chosen + Expansion
Half-Life
Half-Life: Before
Half-Life: Blue Shift
Half-Life: Opposing Force
Half-Life²: Downfall
Half-Life²: Year Long Alarm
Quake III Arena
The Apogee Throwback Pack
Return to Castle Wolfenstein
S.T.A.L.K.E.R.: Clear Sky
S.T.A.L.K.E.R.: Shadow of Chernobyl
Wolfenstein 3D
Wolfenstein 3D: Spear of Destiny