I picked this one up today and it was easier than I thought. Here are the earliest starting missions for each Armor Ability. You do not need to complete the level for the ability use to count.Regen Field
- A-3Stun Blast
- B-4Active Camouflage
- C-3Hardlight Shield
- D-2 (Earliest pickup of this item is Mission C-4)Autosentry
- A-1 (Must be purchased for 300XP, does not occur as starting ability)
Simple enough: start up each level and use the starting Armor ability once and you will get the achievement as soon as the last ability is activated. Easy 10G!