Most obsessive compulsive thing you've done in a game?

[Tazzy da Devil]

I've completed the pokedex in every pokemon game. I win.

Right now I'm playing Radiant Historia, and I'm deliberately getting bad endings so I can collect every one.

 

[Neverhoodian]

In Fallout 3 I loot everything. EVERYTHING. Down to the last tin can. I'm not satisfied raiding a cave/subway terminal until I know for a fact that everything I could pick up has either been added to my inventory or sold to the nearest vendor. If it takes 20 trips to accomplish this, then so be it.

 

[Tharwen]

Running through Crysis on the hardest difficulty and trying solely to use melee. Only melee.
On the upside I can do it blind now

What did you do about the end boss fight?

Unrelated: Last time I played through Crysis, I somehow managed to get to that fight without picking up the TAC Cannon. I ended up sitting there indefinitely with Psycho and irritating-archaeologist-woman shouting at me to fire it...

That doesn't count

Shut up. It counts so hard.

You're just wrong.

 

[Jmurray21]

In Deus Ex human Revolution I shut every door, vent and man hole. I don't know why, it's part of the role-playing I guess.,

 

[xWestie]

Whenever playing in a multiplayer shooter, i reload after every kill, gets me killed no end of times. Also have a habit of quick changing while running around. Also gets me killed alot.

Ninja'd.

Doesn't help in BlOps when someone has second chance >>;

 

[TheYellowCellPhone]

Sometimes in FPSs I have to keep my ammo for a reload divisible by the ammo it has.

For example, I have a gun that holds five shots. I have forty-six bullets on standby. CANNOT HAVE THAT.

So I waste a shot, have a gun with five shots and a forty-five bullets on standby. ACCEPTABLE.

 

[Ronarch]

In Grand Theft Auto: San Andreas, I would have to change into the proper emergency service uniform for the vigilante and paramedic side-missions, even if I'd have to run halfway across the map to a safehouse.