I attempt to master games myself, beating them as they were intended.
"Although, sometimes you'll watch a gameplay video if you get stuck!"
I don't like cheating or exploiting game engine faults to 'cheese wins'.
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Steam online game achievements:
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Killing Floor 1 over 1,500 hours.. one of the top NZ players at the time. I know most of the other top NZ players. There were a huge number of top AUS players though, no surprise considering most of the players and servers were in Australia. I was one of the founding members of the MGC clan and am friends with the Insomniaxe clan founders, of which I and everyone else were extremely grateful for the servers they provided. I tried to teach/mentor others to play the game at the highest levels in my final 500 hours.

Marvel Puzzle Quest.. Yes, I can safely say with my two rosters I will have over 10,000 hours over the 7 years I've been playing the game.. I've always tried to do my best in this game, but also help others to achieve goals together as a team. I had created three alliances, and had up to 60 players playing together as a team at one point. We had great success. Our PVP alliance has always been in the top 100 for the past 5 years. Our Boss Event alliance has probably always achieved full progression rewards. Personally, I had almost straight rank 1 wins in PVE competitions in my final 6 months. Due to the game developers always changing the core of the game, I've always had an uphill battle. But usually I rank high in what I play. I only tend to go at one speed, which is all in.. Unfortunately, that means it will also be difficult for me to stop completely. But my frustrations I have with the developers will help.

Rocket League.. From memory I think I played this into platinum in all game modes. Met some good nice players but I never joined a clan, so didn't get any team rankings.

Contagion.. Another great zombie co-op experience, also met some good nice players here.

The time spent above introduced me to some great Steam friends and experiences. Although, I may not play another massively multiplayer game again.. I tend to enjoy co-op orientated games only now.
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Grew up gaming on a Commodore C16 and C64.

Been using PC's since the days of XT's and AT's using DOS before Windows was invented.

Cut my teeth on all the classic games when they were originally released.
For example;
FPS = Wolf3D, Doom, Quake, Duke3D, etc...
Driving = Test Drive, Street Rod, Need For Speed, TOCA, etc...
Strategy = Battle Isle, Warcraft, Dune, Command & Conquer, Red Alert, Jagged Alliance, etc...
Fantasy = MegaTraveller, Eye Of The Beholder, Might & Magic, Heroes of Might & Magic, Diablo, etc...
Adventure = Pirates, any of the Sierra or Dynamix adventure games, etc...

The real truth, quoted from a game developer "As Unity (game engine) updates sometimes break things that works" http://gtm.steamproxy.vip/games/394760/announcements/detail/501424872788660398