War Metal/Epic Bosses/Sentinel

Components Consumed on Launch	Time per Instance	Level Required to Join	Team Size	Enemy Health	Team Health	Enraged Mode
2 Gateway Nodes 5 Quantum Beacons	72 Hours	200+	1 to 100 Players	85,000,000	Unlimited	Does Not Exist

The Sentinel was introduced on or before December 30, 2010 (beta?) along with the Purged Blight mission tier.

Units/abilities

Sentinel x3

• Type: Bloodthirsty (cannot be jammed by general Assault jammers)
• Proc rate: 70%
• Damage: 15-45
• Avg damage: 21
• Healing: 20
• Avg healing: 14

Reinforcements

Gatling Gun

• Requires 20 Players to Activate

Rail Cannon

• Requires 100 Players to Activate

Loot and Rewards

• $1,000,000
• Experience: +150
• Trophy: Sentinel Core
• Token: Sentinel
• Token: Protection
• Token: Prestige
• Assault: Raven
• Assault: Reshaper Tank

Loot Tiers

These are the current loot tiers for players and hosts.

Player Damage Rewards:

        0 - 42,460:     You did not do enough damage
   42,563 - 84,020:     Trophy: Sentinel Core x1
   85,024 - 212,481:    Token: Prestige x1
  213,533 - 424,820:    Token: Protector x1 
  425,148 - 637,552:    Token: Sentinel x1 <-- Most efficient tier for Sentinels
  637,558 - 850,002:    Token: Protector x1 / Protector x2 <-- for Protectors
  850,050 - 1,275,103:  Raven x1 / Reshaper x1
1,275,142 - 1,699,762:  Token: Sentinel x1
1,700,165 - 2,117,283:  Token: Protector x2
2,125,915 - 2,861,367:  Raven x1 / Reshaper x1
2,980,656+:             Token: Sentinel x2
 
Extra tokens:
2,563,518 - 3,400,046:  Token: Protector x3 / Sentinel x2
3,400,506 - 5,081,250:  Token: Protector x3
5,191,954 - 6,701,413:  Token: Protector x4
6,810,273+:             Token: Protector x4
 
 
Host Damage Rewards (not completely accurate):
 
        0:              You did not do enough damage
        0:              Trophy: Sentinel Core x1
        0:              Token: Prestige x1
        0:              Token: Protector x1
        0:              Token: Sentinel x1
  250,000:              Token: Protector x2
  522,208 - 764,303:    Raven x1 / Reshaper x1
  854,831 - 1,166,088:  Token: Sentinel x1
1,275,457 - 1,406,287:  Token: Protector x2
1,711,215 - 2,545,631:  Raven x1 / Reshaper x1
2,561,414+:             Token: Sentinel x2
 
Extra tokens:
2,146,806 - 2,923,808:  Token: Protector x3/Sentinel x2
3,000,057 - 3,814,800:  Token: Protector x3
4,768,043 - 5,393,469:  Token: Protector x4
6,800,850+:             Token: Protector x4

Todd-sama thinks that the host tiers may be about -400,000 from regular tiers. 
He tested at 250K and received the loot from the 637,558 tier.

"Extra tokens" show up at the bottom of your loot screen after a successful Sentinel event.

Notes

• Ascaris and Undead Dalmace have the ability to take control over one of Sentinel's possible three attacks and make the beast attack itself for that one instance while taking the healing and bestowing upon you. This makes But they don't make those two a "must have" commander for the Sentinel fight. Empress and Alaric abilities to jam bloodthirsty units do not appear to work.
• For those wishing to join a closed group for the purposes of finding Sentinel events, the group SENTINELS "War Metal" HUNTERS has been established. There is a Sentinel Elite group but unfortunately, the decision was made to limit that group's membership to less than 250 so that Facebook's group chat will work.
• It is advised that to be safe, do at least 1K-2K damage over the loot tier floor. There have been reports of people meeting the floor requirement but not getting their loot, which is resolved by simply doing a bit more damage.