Battle for Wesnoth [App Store]
Battle for Wesnoth HD [App Store]
OpenFeint 
900
Bloodied 5
Kill 25 enemy units
Slayer 10
Kill 50 enemy units
Bone Crusher 40
Kill 500 enemy units
Battle Master 20
Kill 100 enemy units
Predator 80
Kill 1000 enemy units
Penny Pincher 20
Collect 300 gold
Money Hoarder 40
Collect 500 gold
Veteran Unit 10
Level up a unit to level 3
Heroic Unit 50
Level up a unit to level 4
Fearless Leader 10
Level up your leader
Rampage 40
Kill 5 units in a turn
Beserk 20
Kill 3 units in a turn
Proficient Commander 20
Control an army of 20 units
Great General 40
Control an army of 40 units
Divine Blessing 20
Finish a mission 10 turns early
Lightning Quick Blades 40
Finish a mission 15 turns early
Recruit of Wesnoth 5
Complete the tutorial
Defender of Wesnoth 100
Complete a full campaign on easy difficulty
Hero of Wesnoth 150
Complete a full campaign on normal difficulty
Champion of Wesnoth 200
Complete a full campaign on hard difficulty
Difficulty
twitter/iPhoneAchieve
550