What do you think new achievements might be for certain classes?

[Video_Master]

Not counting the medic since most of that info is out there, but for all the other classes what do you think some of the achievements and the new weapons might be?  I want to hear what everyone thinks and I believe this will become a good discussion.

[Highsight]

Some good spy ones:

Betrayal: Backstab a Medic after Getting Healed.
UnFixable: Sap a sentry and kill the Engineer while he tries to fix it.
Burned!: Backstab a Pyro (This can be hard as hell)
Sentry Buster: Destroy 20 Sentries with your Revolver.
Master of Disguise: Backstab five people in one life, without cloaking.
Stealthy: Backstab five people in one life, without disguises.
Trickery!: Backstab an enemy while disguised as another class on your team.
Spy Detector: Backstab an enemy spy disguised as someone on your team.

[crazydog]

Obviously there will be "Kill x enemies with x weapon" for every class+weapon.

A good pryo one would be "defend a control point and set everyone on it on fire"

There will probably be one for blowing an ubered medic, or his target, away with a rocket/sticky/crit something else.

[Giant Flying Head]

Side arm Hero - Kill someone useing only the shotgun.
Sidekick - Get 10 assists in one life
SpyChecker - Kill 10 spys in one life (best for pyro)
Godzilla - Destroy 2 sentries durring one uber
Burster - Set 10 poeple on fire in 45 sec (pyro)
Sneaky Feet - Capture a point with full health and full ammo
Dominating Capture - Kill 4 poeple while holding the inteligence

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