Here is the full list of all 28 Sky Rogue achievements.
Reach the arid islands
Complete mission 0
Complete a custom mission
Complete a mission without taking damage
Earn an air kill while stalling
Earn 5 air kills in one mission
Kill an enemy aero at range 50 or less
Score a critical hit
Find the debug menu
Complete a mission in co-op mode
Complete a co-op mission without either player taking damage
Unlock all Fighters
Unlock all Interceptors
Unlock all Bombers
Complete the game
Complete the game in co-op mode
Reach the snowy islands
Reach the final island
Unlock all technologies
Complete the game without upgrades
Complete the game using only the Rogue with its default loadout and no upgrades
Die 100 times
Complete the game in under 40 minutes