Here is the full list of all 27 Super Sanctum TD achievements.
Kill a Big Walker.
Unlock all tower and skill slots.
Clear the Facility Compound
Get 100 perfect rounds.
Hit 10 enemies with Thunderbolt.
Have no blocks at the end of a level.
Beat a wave with only skills and blocks.
Complete a level without using any skills.
Kill 10 enemies with a single shot
Clear the Training Area.
Beat a level on Hard.
Kill 2 enemies with a single Bomb.
Complete one level.
Kill a Walker with an Anti Air Tower.
Kill 10 enemies in a single Penentrator shot.
Clear Brightholme Industries.
Clear the Hydro Islands.
Kill a Huge Walker.
Beat all levels on Normal.
Kill the Patriarch.
Kill the Charger and all its clones.
Unlock all towers and skills.
Beat all levels on Hard.
Kill the golden Walker.
Get all stars in all levels on Hard difficulty.
Kill 10.000 Walkers.
Clear Elysion