List of Eternal forms of HD enemies:
Beheaded Rocketeer:Projectiles home in on the player & deal 2.5x of their damage
Beheaded Firecracker:Projectile leave fire on the ground,& they explode when they hit the player
Beheaded Bomber:The Bombs are bigger,& cluster into smaller bombs
Beheaded Kamikaze:Clusters into bombs upon death,although it takes 50% less damage
Marsh Hopper:Explodes upon death
Gnaar Male:+100% faster movement speed,+50% melee damage
Gnaar Female:+50% faster movement speed,+150% melee damage
Kleer Skeleton:Explosive Chain Balls,+125% movement speed. Splits into 3 mini kleers upon death
Mini Kleer Skeleton:They don't throw chainballs,but they run very fast yet deal little damage. Even though they cannot have eternal forms.
Witch Harpy:Her projectiles travel faster & home in on the player,Shoots projectiles around herself when kicking at the player!
Werebull:Explodes when ramming the player,Doesn't take damage from its own explosions though
Zorg Soldier:Projectiles slightly home in on the player. Has a chance to shoot a white projectile that is explosive.
Zorg Commander:Shoots explosive white projectiles.
Reptiloid:Green Balls are more explosive!