Cave troll

See also: Cave Troll (detailed, no pictures) The cave troll is the rarest and possibly the most dangerous creature in the game. They are blue, have one eye, and are more than willing to kill any intruders that cross their path…

Location
Cave trolls are generally found 3/4 of the way from sea level to the core, around the level where gold and diamonds are found. There can be multiple cave trolls in a world - but each have their own separate area, and thus will be alone. You know you're near a cave troll’s area when ominous music starts playing. You’ll know you're there when you see two ice torches, a golden chest between them, and the cave troll. There is also a chance for a Level 1 trade portal to be found nearby.

Behavior
A troll prefers to stand guard over its treasure between the two ice torches in its lair.

If disturbed by a Blockhead attacking or approaching too close, the troll will pursue the intruder. It is almost as capable of climbing (including ladders), jumping, swimming, and otherwise navigating a cave as any Blockhead, although it moves slower, allowing most Blockheads to escape. The only way Blockheads can go somewhere a troll can't is if there is a one-block-high tunnel the Blockhead can enter.

If its target moves too far away from the troll, the troll moves too far away from its lair, or its target passes a suitable bar

Combat
Cave trolls can deal major damage and can take a lot of hits. It is best to take caution around cave trolls if a Blockhead is not well prepared.

Upon first kill, you will get an achievement called Blue Fury. Once the cave troll has been killed or subdued, grab the golden chest and get out!

User Tips:
Lolzoey's Strategy: Mine straight down to the cave, but on your way down, mine all the blocks around a block in the wall beside your blockhead. Make sure that you only mine ONE LAYER of blocks around the selected block. Get the cave troll to chase you, but don't get too far away from the troll. Climb up the, then when you get to the block you mined around, crawl into that space, then place a block under the cave troll. This may not work, though. Then, crawl through the space so youre  below the block the troll is stuck on. Then, help yourself to the treasure!