For defeating Boss:
About 8 chests appear: "Thunderbomb". Only one contains the actual Thunderbomb (200% Attack, AoE lightning skill, same as boss, cooldown 1 sec, infinite shots)
A pop-up will appear when a player gains Thunderbomb, "[players name] has obtained Thunderbomb"
When the tank of the player possessing the Thunderbomb is destroyed another chest appears, any other player may collect the chest to obtain this skill, the player who already had the thunderbomb may aquire it again if his cooldown ends.
The thunderbomb will disappear after changing hands thrice (recollection also counts).
For winning party:
1 Victory Chest, 200 Tank EXP and Tank Technology (according to days played)
Pre 1.6.2 patch: 3 Battle Rune Pack, 200 Tank EXP and Tank Technology (according to days played)
For losing party:
1 Failure Chest, 200 Tank EXP and Tank Technology (according to days played)
Pre 1.6.2 patch: 1 Battle Rune Pack, 200 Tank EXP and Tank Technology (according to days played)
Individual Rewards (depend from rank):
1st Place: Diamond Runestone Pack (17-20 runestones)
2nd Place: Gold Runestone Pack
3rd Place: Silver Runestone Pack
4th Place: Bronze Runestone Pack
5th Place: Iron Runestone Pack
6th-8th Place: 1 Small Runestone