Good old Deadmines got a revamp for heroic with a new endboss and all.

Glubtok

Phase 1 (100-50%):

• Fists of Flame - Sets his fist on fire making strikes do additional fire damage and sometimes knocking back nearby enemies
• Fists of Frost - Coats his fist with frost making strikes do additional frost damage and sometimes slows nearby enemies

Phase 2 (50-0%:

• Greater Mass Teleport - Ports all enemies to within range of him to start phase to cast...
• Deep Freeze - Freezes nearby enemies in a block of ice and starts to cast...
• Arcane Power - Room fills with arcane power launching fire and frost spells throughout the room
• Fire Blossom - Deals fire damage to an area and launches enemies up
• Frost Blossom - Deals frost damage to an area and slows enemy attack and movement speeds

Notes:

• Phase 1:  Blinks, dropping threat, while alternating between his two fists
• Phase 2:  He starts floating up in the air and no longer attacking (directly)
• Does a fire "Cutter beam" across the room so keep moving
• Elemental adds start spawning exponentially, splash kill those before they build up
• Otherwise just kill him while avoiding the fire and frost around the room

Helix Gearbreaker

Phase 1:

• Helix is riding a Lumbering Oaf
• Randomly grabs players to ram into a wall
• Occasionally throws Sticky Bombs which explode after a few seconds and knockback

Phase 2:

• Begins after Oaf is killed, and Helix jumps on a player
• Repeatedly throws Sticky Bombs
• Goal is for player that got jumped to keep moving to avoid those so others can dps him down
• Also attaches bombs to random players, they run away

Foe Reaper 5000

• Reaper Strike - Deals physical damage in a frontal cone
• Overdrive - Deals physical damage to all nearby enemies, 3 second cast
• Harvest - Moves towards a target dealing physical damage repeatedly to all in its path
• Safety Restrictions Off-line - Physical damage increased by 100%, cast at 30% hp

Experimental Harvester (vehicle for you to use)

• Melee damage and generates steam power to use other abilities
• A stun
• A knockback

Notes:

• Pick a dps to pilot the vehicle and use it to deal with all the fire slag mobs
• Overdrive is like a whirlwind, run
• Harvest  is a persuit type ability, so, run
• And finally its own type of enrage to heal harder and dps faster

Ripsnarl

• Thirst for Blood - Increases attack speed by 10% and movement speed by 5% per stack, stacks to 20, gained with each successful attack
• Swipe - Deals physical damage to the target and up to 3 nearby enemies
• Go for the Throat - Jumps at a target inflicting 100% weapon damage and knocking enemy down

Notes:

• He can swipe and watch Thirst for Blood as damage will increase
• Randomly does Go for the Throat on players
• Some time in, enters the vapor phase of the fight where Vapor adds spawn
• Kill those, if left up too long the fog empowers them increasing size and damage
• Ripsnarl will reappear and you must continually deal with the exponentially spawning Vapors

"Captain" Cookie

• Sits in a pot and throws food on the ground
• Rotten food is a damaging aura, and if you eat it, slows your movement and attacking speed by 30%, and leaves a DoT
• The good food gives you a stacking buff that increases movement and attacking speed
• Don't take too long or rotten food will be everywhere, or someone could take the hit and eat that stuff

Vanessa Vancleef

This boss fight will start off as a gauntlet, click the note to start this

1. You'll be slowly lowered into lava, hit the steam pressure vents to release yourselves
2. Next, avoid the fires and the ice that will fall down from the ceiling
3. Kill the spiders
4. Next room has spinning lines of sparks (cutter beams) to dance through
5. Kill the worgens
6. Now you'll face Vanessa

Phase 1 (to 50%)

• Backlash - It's a shadowstep, dealing physical damage over 10 seconds
• Deadly Blades - Rapidly jumps from target to target dealing damage
• Deflection - Parry goes up 100%, ranged chance to hit her reduced by 100%, grants 100% chance to deflect spells

Notes:

• Adds will also repeatedly spawn for you to deal with, comes in caster and melee flavors
• The phase ends with her blowing up the ship, you must run to the front and get on the ropes to chase her, it's a vehicle based climbing ability

Phase 2

• Fight just repeats without the adds
• Kill fast before she blows up the wall
• Fight ends at 1%
• Loot is in the water