Get the Vengeful Sun God: Requirements & Sacrifices

• Making the Vengeful Sun God isn't cheap because you'll need to sacrifice at least $215,000 as well as The Anti-Bloon and Legend of The Knight.
• Requirements include not being in Sandbox mode, having "Monkey Knowledge" enabled, and having unlocked "There Can Be Only One."
• First you'll need to sacrifice 3 towers from different categories, then 4 towers of different categories.

Requirements

Select a non-sandbox mode and enable "Monkey Knowledge". You cannot summon the Vengeful Sun God in Sandbox Mode or in an instance with Monkey Knowledge disabled. This means you cannot play with C.H.I.M.P.S. activated since that mode disables Monkey Knowledge.

Have "There Can Only Be One" in Monkey Knowledge. It's the final knowledge point unlocked in the Monkey Knowledge tree.

Sacrifices

Place a Super Monkey. Using the panel on the right side of your screen, select the monkey with the super suit (it's on a purple background), then place it on your map.

Upgrade your Super Monkey three times in tier 1. When your monkey is placed, the panel on the right side of your screen expands to show you upgrades that are available. Click the tier 1 upgrade 3 times until it reads "Sun Temple." The monkey on your screen is no longer wearing the blue super suit but instead wears a golden suit.

Place monkeys inside your Sun Monkey's range from ¾ tower categories totaling at least $50,000 each. That means that you can have 1 of each: primary, military, magic, and support that individually equal $50,000. For example, drag and drop a Monkey from the primary towers (blue backgrounds), and click the upgrade button multiple times until it's valued at $50,000+. Next, drag and drop a Monkey from the military towers (green backgrounds), and click the upgrade button multiple times until it's valued at $50,000+. Next, drag and drop a Monkey from the magic towers (purple background), and click the upgrade button multiple times until it's valued at $50,000+. Which towers you use (primary, military, magic, and support) does not matter, as long as you use 3 different types. The tier that you upgrade does not matter; as long as the value of that Monkey is at least $50,000.

Select your Sun Monkey and click the "Sun Temple" upgrade. A window pops up alerting you that you are about to sacrifice the monkeys that are in range. Click Do It to continue.

Place monkeys inside your Sun Temple's range from all tower categories totaling at least $50,000 each. Do what you did previously, but make sure to include one monkey from every tower category. Make sure that all the monkeys you place are in the range of your Sun Temple.

Place The Anti-Bloon and The Legend of The Knight outside of your Sun Temple's range. Each of those are upgraded Super Monkey towers. To get The Anti-Bloon, click the tier 2 upgrade 5 times, so you'll proceed through "Super Range > Epic Range > Robo Monkey > Tech Terror > The Anti-Bloon." To get The Legend of The Knight, click the tier 3 upgrade 5 times, so it'll level through "Knockback > UltraVision > Dark Knight > Dark Champion > Legend of The Knight."

Select your Sun Monkey and click the "True Sun God" upgrade. A window pops up alerting you that you are about to sacrifice the monkeys that are in range. Click Do It to continue. Since the other Super Monkey towers (The Anti-Bloon and Legend of The Knight) are out of the Sun Temple's range when you sacrifice the other towers, they remain and interact with your True Sun God tower as it upgrades.