Here is the full list of all 20 Microsoft Treasure Hunt (Windows) achievements worth 1,000 gamerscore.
Reached the exit on level 11 without using any flags
Purchased 3 Amulets in one game
Defeated 3 monsters
Collected 1000 gold in bonus levels
Triggered your first trap
Reached the exit on level 1
Dug all dirt tiles without traps on any level
Purchase the 8 Dynamite Bag
Purchase the 10 Pickaxe Belt
Purchase the 15 Map Tube
Have 5 hearts
Reach level 12 without dying or respawning
Enter a shop with at least 500 gold and spend down to exactly 0 before you leave
Gather 5000000 gold
Use a dynamite 8 times during one level
Use a map 20 times
Defeat 5 bats without defeating any other monsters in-between
Dig 1000 dirt tiles by "chording" (placing flags on nearby traps and tapping the adjacent tiles)
Reach level 3 without picking up any gold or treasure
Purchase all items and heart upgrades for your character