Achievement unlocked

[strongbad]

What achievements do you want to be in the 360? for me I'd like:

Monkey see, Monkey die-Lead a monkey into spikes.
Crusher-Kill the mummy with a block.
Weeee!-Ride a falling platform to your death.
So close...-Bring a Scepter but not a Hedjet to the Gold city door.
Wuss-Bring a Hedjet but not Scepter to City of Gold door.
ALLAH!!-suicide bomb yourself.
Son of a...-Pass up the hedjet in the Moai head.
Resident Spelunky-Kill all monsters in a restless dead level with a pistol.
Set it to C <,>, or ^ to use-Get the compass.

[Credendo]

Stone Age: Only jump on or throw a rock to kill enemies for the whole game.
Master Thief:Kill all the shop keepers in the black market.
Screen-shot or it didn't happen: Kill a giant spider with a whip.
Underground railroad: "Liberate" 5 damsels from the shopkeepers
Dun-DAh-Dun-DAH: Avoid 50 rolling rock traps
Free Fallin: Fall at least 15 squares without taking damage.
When a Bat's Against a wall You must whip it: Whip a bat through a wall

[DirkRhyolite]

Yukon Cornelius: Kill a yeti with a mattock.
King of the Underground: Defeat all the minibosses.
Spelunky the Vampire Slayer: Kill 50 vampires.
Just Getting Started: Die 1000 times.
Spelunky Sandwich: Get squished between two smash traps.
Darwin Award: Drop all of your flares into the water.
You Can't Take It With You: Die in the City of Gold.
Bomberman: Have 50 bombs at one time.

[johnnoz]

Oh So THAT'S Where It Went!: Kill yourself by holding a stickied damsel
Dangerous Construction: Kill any enemy by dropping a falling platform on its head in Area 3
Lateral Thinking: Kill a mini boss by dropping a movable block on it.
Rampage: Kill 10 enemies within 10 seconds
ROCKET LAUNCHER!: Discover the bow's secret ability
Iron Man: Have over 20 Hp at some point
Monster: Sacrifice 3 damsels in one run

[Phasma Felis]

You know what I'd like to see, in the spirit of Spelunky, is a huge reel of achievements for every kind of stupid death.

Killed by your own thrown object.
Wallballed by a yeti at least three times before dying.
Fell to your death when your jetpack ran out of juice.
Thrown onto spikes by a monkey.
Survived an arrow trap impact, but knocked onto spikes or into lava.
Survived a long fall, but nibbled to death by bats while stunned.
Caught in a web with your own bomb.
Eaten by a mantrap you were carrying.
Struck by a high-velocity damsel.
Killed by a shopkeeper without ever getting out of the shop.
And so forth.

Unfortunately I think Live Arcade games are limited to 12 achievements each. That's not even enough to cover the basics.

[Credendo]

Course you could do what some of the later games have done and have sub achievements IN the game and with so many of the achievements unlocked you unlock a regular achievement

[johnnoz]

yeah if there is going to be a decent amount of achievements then that's probably the best system. It also means that most achievement messages you'll get can use the games art style instead of the generic 360 one.

[johnnoz]

Actually how has this one not been suggested

FINALLY! - win the game

[eguee]

Masochist- Start the game.

[marsgreekgod]

Actually how has this one not been suggested

FINALLY! - win the game

(after 1,000 deaths)

[cerealkiller54]

Kill five enemies with one thrown object
String together a 5 enemy combo by stomping on them
Unlock the sun/moon/stars/dressing room
Get x$ in one level
Use x ropes/bombs in one game

Sub achievements will probably be the way to go
How about categories for each type of challenge ie like in CoD4

Don't leave out the possibility/probability of new features, enemies, etc.  :

[marsgreekgod]

Kill five enemies with one thrown object

Do bomb frogs count? becuse one time I threw a bomb frog killed three frogs noked out a cave man, the frog blew up send the cave man flying at me which killed a bat that was about to hit me.

My most epic moment.

[DirkRhyolite]

Usain Bolt: Complete a level in under 10 seconds.

[GreyMario]

Greased Usain: Complete a level in 6 seconds or less.

[eguee]

Usain on Fire: Complete the game from start to finish in within 4 minutes.