Here is the full list of all 22 Sky Cannoneer achievements.
Complete all three goals for a mission.
Complete all goals on all missions.
Complete Stratum.
Wake the Fiends.
Investigate The Horizon.
Take a Deep Breath.
Accumulate.
Pass through The Archway.
Reach the maximum player level.
Complete the game with Ironman mode enabled.
Complete the game on Corsair difficulty.
Complete the game on Corsair difficulty with Ironman mode enabled.
Achieve all mission goals in Stratum.
Achieve all mission goals in Waking Fiends.
Achieve all mission goals in the Horizon.
Achieve all mission goals on Stratum.
Achieve all mission goals in Accumulation.
Achieve all mission goals in The Archway.