69 achievements, 69 skins
As of V1956, Crab Champions has 69 achievements, and each one unlocks a skin. That detail changes how you read the list: it is not a side quest log, it is the game’s cosmetic progression, so an achievement you skip is a skin you never see.
The 69 split into three groups:
- Main game achievements — the bulk of the list, covering difficulty, speed, damage and inventory feats.
- Weapon achievements — a two-tier pair per weapon (win on any difficulty, win on Nightmare) plus Gunslinger for winning with all of them.
- Minigame achievements — two, one for Arcade and one for Holdout.
Difficulty and win-count achievements
These are the ones that arrive by playing.
| Achievement | Requirement |
|---|---|
| Crab Champion I | Win on any difficulty |
| Crab Champion II | Win on Nightmare difficulty |
| Crab Champion III | 5 total wins on Nightmare |
| Challenger I | Win on any difficulty with 5+ difficulty modifiers active |
| Challenger II | Win on any difficulty with all difficulty modifiers active |
| Challenger III | Win on Nightmare with all difficulty modifiers active |
| Looper | Win after looping at least once |
| Skilled | 3 wins in a row, any difficulty |
| Pro | 2 wins in a row on Nightmare |
| Master | 5 wins in a row on Nightmare |
| Marathon | Survive until island 100 |
| Crab Legend | Complete all challenges |
The step from Challenger II to Challenger III is the single biggest jump in the list: all modifiers at once is already brutal, and doing it on Nightmare is where most completion runs stop.
Flawless and speed achievements
| Achievement | Requirement |
|---|---|
| Flex I | Defeat an elite without taking damage |
| Flex II | Defeat a boss without taking damage |
| Flex III | Clear the first biome on Nightmare without taking damage |
| Flawless | Win on Normal without taking damage |
| Speedrun I | Clear island 20 in 16 minutes or less |
| Speedrun II | Clear island 50 in 40 minutes or less |
| Speedrun III | Clear island 100 in 70 minutes or less |
| EZ | Defeat a boss in under 10 seconds |
Note the arithmetic on the Speedrun trio: island 20 in 16 minutes, island 50 in 40, island 100 in 70. The third one is not proportionally harder — 100 islands in 70 minutes is a faster pace per island than 50 in 40, which is why Speedrun III is usually the last of the three.
Damage, economy and inventory feats
| Achievement | Requirement |
|---|---|
| Ultra Damage | Deal over 100K damage in a single shot |
| Tank | Reach 10,000 max health in one run |
| Millionaire | Win with over 1M unspent crystals |
| Big Spender | Make 100 shop purchases in a single run |
| Frugal | Win on Normal with 5 or fewer shop purchases |
| Roller | Reroll shops 50 times in a single run |
| Recycler | Salvage 100 pickups in a single run |
| Greedy | Defeat a boss holding at least 5 greed perks |
| Vandal | Destroy 25 totems in a single run |
| Maxed Out | Fill all mod and perk slots in one run |
| Playing With Power | Level a mod or perk to level 20 in a single run |
| Solid Gold | Fill 20 weapon mod slots with legendary mods |
| Unstoppable | Win with over 7,500 eliminations |
| Slice And Dice | Win without firing your weapon |
Solid Gold is the one that ties into enhancements: 20 legendary weapon mod slots is a long-run project, not a single good run. Similarly Slice And Dice is not a joke entry — it forces an ability or melee build, which is exactly the kind of constraint that teaches you what the build guide is talking about.
Weapon achievements
Every weapon has two entries: Weapon Master I (win on any difficulty) and Weapon Master II (win on Nightmare). Gunslinger requires winning with all weapons in the game — so it completes itself once you have taken every weapon through a Nightmare win, which is also the most reliable way to raise your account rank, since each weapon’s medal needs a win above its current rank.
That overlap is the single best efficiency note on this page: pushing every weapon to a Nightmare win serves the weapon achievements, Gunslinger and the account medal at the same time.
Minigame achievements and the Holdout 50
| Achievement | Requirement |
|---|---|
| Arcade Champion | Score at least 300 in the Arcade minigame |
| Holdout Champion | Score at least 50 in the Holdout minigame |
Holdout is the mode behind the very common “crab champions holdout 50” search. The achievement is a score target, not a survival target: you need 50 points, and the run ends when you do. Treat it as a short score attack — bank points early rather than trying to build a long-run scaling engine, because the scoring window is what it is.
Arcade is the same shape with a much higher bar, 300. If you are doing both, do Holdout first: the habit of banking early transfers, and the smaller target gives you a faster read on whether your approach works at all.
If achievements are not unlocking
The wiki lists exactly two causes, and both are outside the game:
- Steam Family Mode must be disabled.
- You must be online on Steam.
If a requirement is genuinely met and nothing pops, those two are the first thing to check — not your save, and not a reinstall.
Related guides
- Account rank guide — the medal system that overlaps with the weapon achievements.
- Weapon tier list — which weapons to take through Nightmare first.
- Anvils guide — how the 26 enhancements feed Solid Gold and Ultra Damage.
- Build guide — the builds behind Slice And Dice and Millionaire.