Solos: Hecatoncheires (Test Build)

I don't have any campaigns going on at the moment, but I was toying around with some various concepts. Here's the Hecatoncheires I was working out.

Hecatoncheires	Level 31 Solo Skirmisher
Huge	XP 115,000
HP 1290; Bloodied 645 AC 47; Fortitude 43; Reflex 42; Will 41 Speed 10 Saving Throws +5; Action Points 2	Initiative +27 Perception +22
Traits
Fifty Heads, a Hundred Swords
The Hecatoncheires acts on its initiative and on an initiative count of its initiative +10, and regains the usage of its Immediate Action whenever it takes a turn. If the Hecatoncheires is stunned or dominated at the end of its turn, that effect ends.
A Hundred Mistakes
Whenever the Hecatoncheires fails to hit with any attacks while using Scimitar Barrage, any effects currently present on the Hecatoncheires end.
Infinite Actions
The Hecatoncheires has Threatening Reach, and can take an unlimited number of opportunity actions each turn. The Hecatoncheires is still limited to one opportunity action per trigger.
Ignore the Challenge
Whenever the Hecatoncheires attacks a creature that has marked it, that mark immediately ends.
Standard Actions
m Scimitar • At-Will
Attack: Melee 3; +36 vs. AC
Hit: 2d10 damage (Crit: 3d10+20), and the target suffers ongoing 10 damage (save ends).
M Scimitar Barrage • At-Will
Target: One adjacent creature Effect: The Hecatoncheires makes five Scimitar attacks against the target. If the target is suffering from ongoing damage and all five attacks hit, the target's ongoing damage doubles.
Scimitar Dance • At-Will
Requirements: The Hecatoncheires must be bloodied.
Effect: The Hecatoncheires moves its speed. During this movement, it does not provoke attacks of opportunity and can enter enemy spaces. The Hecatoncheires makes a Scimitar Barrage attack against any enemy whose space it enters.
Minor Actions
Rage of the Chained One • At-Will 1/round
Requirements: The Hecatoncheires must not have attacked this turn.
Effect: The Hecatoncheires gains a cumulative +10 damage to its next usage of Scimitar Barrage. The Hecatoncheires cannot attack before the end of this turn.
Triggered Actions
M Blade Ward • At-Will
Trigger: An enemy makes a melee or ranged weapon attack against the Hecatoncheires.
Attack (Immediate Interrupt): Melee 3 (The triggering creature); +36 vs. AC
Hit: 2d10 + 0 damage and the Hecatoncheires gains a +4 bonus to defenses against the triggering attack.

This solo monster doesn't have a dedicated cleanser power that it can use on its own, but has some various ways to counter immobilization and restraining effects. Most notably, any attack penalty effects can result in the triggering of it's cleanser power, so there's a trade-off in applying them.