Arm Mimic
Threat:5/10
Speed:Medium
Attacks:Contact:One heart
Defence:L-1 Sword:3 hits, L-2 Sword:1 hit, L-3 Sword:1 hit
Description:Arm Mimics are not very common, seen first in the 3rd dungeon: Poison Moth's Lair. I believe the reason they are scarce, is due to the fact that they can be vey annoying to encounter. They mirror your every move. If you move up, they move down, if you move left, they move right, and visa-versa. I reccomend moving up to them slowly and slashing until they are destroyed.
Armos
Threat:6/10
Speed:Medium
Attacks:Contact:One heart
Defence:Invincible to everything, but bombs and the Biggoron Sword:1 bomb, or 1 slash from the Biggoron Sword
Description:Armos will stay where they are unless you trigger a specific switch. These enemies are very frustating to kill sinse they only things that kill them are bombs and the biggorn sword. I know what you would say, "Come on just use the Biggoron Sword," but you don't get the Biggoron Sword until very late in the game, and at the time you do get it, there aren't very many more armos.
Ball and Chain Trooper
Threat:7/10
Speed:Slow
Attacks:Contact:Half a heart, Spiked Ball:Half a heart
Defence:L-1 Sword:4 hits, L-2 Sword:2 hits, L-3 sword:1 hit