Sphere TD

36 achievements

Ultra Rare×21

Very Rare×5

Rare×5

Uncommon×2

Common×3

About Sphere TD's achievements

Sphere TD has 36 Steam achievements, 8 of them ultra-rare — unlocked by under 5% of players. The rarest is "Casual Cadet", earned by just 0.2% of players. Below is the complete achievement list with global rarity and a full achievement difficulty breakdown.

Rarest achievement

0.2%

of players earned "Casual Cadet"

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Difficulty—

Easy → Brutal

Enjoyment—

Meh → Loved it

Grindiness—

No grind → Huge grind

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All Sphere TD achievements

36 achievements

Sphere Obliterator

Destroy fifty million spheres. Strategic Command no longer tracks enemy formations. They track whether you are awake.

Ultra Rare0.0%

Sphere Harbinger

Destroy two hundred and fifty million spheres. The spheres spent three eons traveling from the edge of the galaxy just to end up as your roof tiling.

Ultra Rare0.0%

Sphere Annihilator

Destroy one billion spheres. The defense budget of the next decade has been replaced with a sticky note on your desk that reads: 'Do whatever.'

Ultra Rare0.0%

Comfortably Lost

Complete Tier 422 world node. You have no idea where HQ is from here, but you have a very clear idea of where your next node is.

Ultra Rare0.0%

Return Date TBD

Complete Tier 447 world node. At some point the map stopped being a mission and became a lifestyle.

Ultra Rare0.0%

Permanent Cadet

Complete Tier 627 world node. Junior Cadet, Senior Cadet, Specialist Cadet. The title is temporary, but the cadet is here to stay.

Ultra Rare0.0%

Non-Standard Cadet

Complete Tier 622 world node. Your tower build violates four Academy guidelines and at least one law of physics, but the spheres died anyway.

Ultra Rare0.0%

Beyond Bureaucracy

Complete Tier 626 world node. At some point the paperwork required to track how many spheres you destroy exceeded the paperwork required to deploy an entire squadron.

Ultra Rare0.0%

Solo Campaigner

Complete Tier 706 world node. Your solo campaign has been so successful that you have started to wonder if you are the only cadet on Earth-25.

Ultra Rare0.0%

That One Cadet

Complete Tier 868 world node. New recruits are briefed on standard procedures, tactical approaches, emergency protocols, and you specifically.

Ultra Rare0.0%

Sphere Enjoyer

Complete Tier 915 world node. Other cadets file mission reports. You file highlight reels.

Ultra Rare0.0%

Today's Main Character

Complete Tier 1022 world node. Most cadets clear nodes. You clear nodes and have started assigning sphere names and narrating your own missions during debrief.

Ultra Rare0.0%

Mr & Mrs World

Complete Tier 1110 world node. You pushed all the way to the corner of Earth-25. There is nothing further to reach. The next wave, however, has already been dispatched.

Ultra Rare0.0%

Casual Cadet

Complete Tier 390 world node. Most cadets at this depth are reconsidering their life choices. You are reconsidering your tower spacing.

Ultra Rare0.2%

Sphere Reaper

Destroy ten million spheres. You have officially shattered the record previously held by an active planetary supervolcano.

Ultra Rare0.5%

Sphere Terminator

Destroy five million spheres. At this density, the wreckage is starting to generate its own minor gravitational pull.

Ultra Rare0.7%

Endless Grind

Survive three hours in one endless session. Command has stopped asking when this will be over. They just labeled your zone 'do not disturb'.

Ultra Rare1.0%

Endless Wave

Survive one hour in one endless session. The spheres kept coming, but your replacements never arrived. Thankfully, your coffee ration did.

Ultra Rare1.5%

Endless Loop

Survive two hours in one endless session. Your post has been reclassified from forward deployment to trench warfare.

Ultra Rare1.5%

Sphere Destroyer

Destroy one million spheres. High Command has quietly renamed your sector to the Exclusion Zone.

Ultra Rare3.3%

Sphere Breaker

Destroy five hundred thousand spheres. Environmental surveys now list your lane as a distinct biome.

Ultra Rare4.3%

HQ Dweller

Complete Galatium Command HQ world node. The first node on Earth-25, cleared by every cadet as a starter assignment. A surprising number of them are still here.

Very Rare5.3%

First Matrix

Apply the Advanced Crafting Matrix to mods. Please remember that the quantum probability board does not accept legal complaints.

Very Rare8.7%

Peak Tinkering

Max out a mod tier. This is what greatness looks like right before the casing blows off.

Very Rare8.9%

Endless Run

Survive thirty minutes in one endless session. Congratulations. You are now the longest-serving cadet in continuous contact with the enemy.

Very Rare8.9%

Sphere Hunter

Destroy one hundred thousand spheres. We asked a quantum supercomputer to calculate your ammunition usage. It began to smoke.

Very Rare12.5%

Officer Cadet

Unlock research tier five. Complete blueprint clearance granted. If a portal opens, act surprised.

Rare15.1%

Endless Start

Survive ten minutes in one endless session. The spheres were not expecting you to still be here. Neither, frankly, was the duty officer.

Rare17.9%

Staff Cadet

Unlock research tier four. Terminal-grade hardware is approved, and the safety officer has started avoiding eye contact.

Rare20.0%

Specialist Cadet

Unlock research tier three. Your designs are now filed under aggressive innovation instead of incident report.

Rare24.6%

Sphere Scrapper

Destroy ten thousand spheres. The local pile of scrap metal now has its own postal code.

Rare26.4%

Senior Cadet

Unlock research tier two. Splitter mods are now legal in your hands, which prompted a controversial meeting at HQ.

Uncommon33.5%

Junior Cadet

Unlock research tier one. You are now authorized to view the starter blueprints. The lab team has moved their personal mugs to a higher shelf.

Uncommon44.8%

Sphere Janitor

Destroy one thousand spheres. For a Temporary Cadet, this counts as a stable start.

Common53.0%

Base Online

Unlock the Base panel. You are now trusted with the shield grid, the reactor feed, and several buttons labeled do not touch.

Common71.2%

Orientation Complete

Complete the main tutorial. The Academy is thrilled you stopped aiming at your own infrastructure.

Common76.9%