Here is the full list of all 28 Magic Technology achievements.
Build 100 machineguns.
Build 100 towers.
Kill 200 mushrooms.
Kill 110 creeps.
Kill 100 bees.
Use skill 100 times.
Use lightning strike 100 times.
Build 100 cannons.
Build 100 flametrowers.
Build 100 ice towers.
Build 100 ice mortars.
Build 100 radars.
Build 100 hammers.
Build 100 rocket launchers.
Build 100 tesla.
Build 100 acceleratos.
Kill 100 wolfs.
Kill 100 goblins.
Kill 100 bats.
Kill 50 golems.
Kill 25 dragons.
Kill 75 ents.
Kill 100 pixy.
Use skill Ice pikes 25 times.
Complete first chapter.
Complete second chapter.
Complete third chapter.
Complete the MTL map.