There are 6 types of enemy’s, 4 basic 2 bosses Stickman does 2 damage to your castle and moves at a moderate rate. The hammer head does 4 damage to your castle and moves sluggishly. The needle head does 1 damage but moves quickly. The ninja deals 1 damage but moves speedily and will move unpredictability. The Necromancer can summon stickmen to rush you and has 20 Hp and deals 25 damage to your base, he moves at a somewhat sluggish rate. The Leader will make all surrounding minions faster and has 10 Hp and will deal 15 damage to your base, he moves at a above moderate rate.
Update1: bugs galore now not as much