I haven't played versus in a while, what exactly is 'Tank parking'?
Basically:
- As an infected, the Tank spawns in a "bad" position or you would prefer it to be elsewhere, i.e. the saferoom.
- Player who gets it runs to the new location, until the frustration meter expires
- The player whom the tank gets passed to will continue the journey to the new location
- When the second frustration meter expires the tank will switch to AI and "camp" the new spot until it can see the survivors
- Since its an AI bot it's a bit dim, like will try to kill whatever survivor it attacks, etc
Some called it strategic, others an exploit, Valve agreed with the latter it seemed.
Also, I notice they didn't fix the 'Lamb2Slaughter' achievement.
Bizzarely - I went onto the game last night (not in-game, just to the menus) just before going to bed, and as soon as I quit I suddenly achieved L2S, but lost Outbreak. This also shows up on my steam community page which has got me thinking as to whether it was permanent or not. I've just got Outbreak back under rather strange circumstances, so now I have both.
Note: I have actually done the thing you need to do to get L2S but since it was bugged I didn't get it, so I've finally got what I deserved assuming the achievement doesn't reset itself again!