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