How to Beat the Ghost Kings with Blazing Gem in Kingdom Rush Vengeance TD+

To defeat the Ghost Kings in Kingdom Rush Vengeance TD+ using the Blazing Gem, build the tower on an inside lane curve and hold the bosses in place with blockers. The Blazing Gem relies on an escalating thermal ray that ramps through three damage tiers. Stalling the boss within the tower's firing circle allows the beam to reach its maximum damage stage and rapidly deplete the bosses' large health pools.

Why the Blazing Gem Counters the Ghost Kings

The Ghost Kings arrive as a pair of spectral bosses with massive combined health pools and high physical resilience, making conventional physical artillery and slow-firing archer towers inefficient.

The Blazing Gem bypasses these defenses by locking on with a continuous magic beam. As long as the ray remains uninterrupted on a single target, it escalates across three thermal tiers to deliver heavy single-target magic damage. Because the Ghost Kings advance at a steady, deliberate pace, a supported Blazing Gem can remain locked on a single brother long enough to hit maximum heat.

Tower Placement and Beam Lock Conditions

Maintaining the continuous beam lock is essential. If the target leaves the tower's range or the gem switches targets, the thermal ray resets to tier one.

To maximize beam uptime:

Select inside bends: Placing the Blazing Gem on the inside curve of a path keeps the boss inside the firing radius longer than an outer edge or a straight path.
Anchor blockers in the center: Station your hero and reinforcement blockers in the middle of the tower's range circle rather than at the outer perimeter.
Provide backup stallers: Place secondary blockers near the exit boundary of the gem's range to catch the boss if primary blockers fall.

Placement Factor	Recommended Setup	Risk of Misplacement
Plot Location	Inside lane bends with wide path coverage	Straight paths cut the boss's exposure time in half
Blocker Position	Centered within the tower's firing radius	Blocking too far forward lets the boss walk out of range
Target Focus	High-health bosses (Ghost Kings)	Passing minions reset the escalating thermal beam
Secondary Stalls	Stationed near the exit edge of the radius	Prevents the boss from escaping if the front line breaks

Preventing Minion Retargeting

Lesser spectral minions marching alongside the Ghost Kings can ruin the Blazing Gem's damage ramp. If a weak enemy draws the tower's aggro, the beam resets.

To protect the Blazing Gem's target priority:

Place area-of-effect towers upstream: Position splash artillery or wide-arc magic towers ahead of the Blazing Gem kill zone to thin out minion swarms before they reach the boss choke point.
Clear swarms with active skills: Use hero abilities and active call-ins directly on clustered minions to ensure only the Ghost Kings enter the Blazing Gem's direct line of fire.

Upgrade Priority

Prioritize upgrading your primary Blazing Gem to Level 4 before investing gold into auxiliary damage towers. Reaching Level 4 maximizes the tower's base and ramped beam damage while unlocking specialized control abilities. After the primary tower is fully upgraded, invest in crowd-control skills or supporting defenses to sustain the frontline blockade.

Boss Engagement Sequence

Execute these steps once the Ghost Kings appear on the map:

Set the choke point: Anchor your Level 4 Blazing Gem on the primary bend where the bosses' paths converge.
Eliminate the vanguard: Fire area-of-effect powers to clear minor ghosts before they reach the main engagement zone.
Stall the first king: Place your hero or durable reinforcements directly in front of the lead Ghost King as soon as he reaches the center of the Blazing Gem's range.
Maintain the stall: Cycle backup reinforcements or hero abilities to keep the first boss stationary until the level-three heat beam eliminates him.
Retarget the second king: Once the first brother falls, shift your hero and rally points to catch the second Ghost King in the same firing zone to ramp the damage beam again.