Achievement route

The Crabtain Achievement Guide

The Crabtain asks you to reach Carcinisation 10 in a run. It is tempting to grab every crab-like piece immediately, but the route still has to survive long enough to finish.

Quick Answer

For The Crabtain, track crab-form pieces deliberately, but do not ignore movement, food, and defense. A dead crab is not a completed achievement route.

Official Everything is Crab screenshot showing a complex evolved creature route — **Route read:** crab-form goals are still survival goals. Keep the route playable while collecting the right pieces.

What to track

Community route notes commonly watch for Pincer, Pistol Pincer, Scuttle, More Legs, Shell, Antennae, Moulting, Exoskeleton, and other crab-coded pieces. Exact values and offer logic can change, so treat this as a checklist to verify during the run.

Route slot	What it does	Why it matters
Crab-form pieces	Push Carcinisation toward the achievement goal.	The route cannot finish without them.
Movement	Lets the crab route survive bosses and crowded biomes.	Crab pieces can make you feel strong but slow.
Food tempo	Creates more evolution choices and reroll chances.	The achievement depends on seeing enough offers.
Defense	Protects long runs from random damage.	You need time for the route to assemble.

How to route the run

Start with a normal survival shell: attack, movement, and food.
Begin tracking crab pieces as soon as the route is stable.
Use rerolls only when they improve the chance of finishing the checklist.
Do not skip all non-crab survival tools. The route must still beat bosses.
After Carcinisation is close, stop experimenting and protect the run.

Common mistakes

The most common mistake is treating The Crabtain like a pure collection run. It is not. It is a collection run inside a survival roguelite. You still need safe food, boss spacing, and a way to kill or avoid dangerous creatures.

FAQ

Can I force The Crabtain every run?

You can try, but it is more reliable when early offers give you both crab pieces and enough survival support.

Should I take every crab-like part?

Not if it ruins the run. Take the pieces you need, but keep one eye on food and boss readiness.

Sources

The achievement requirement is based on the public Steam achievements page. See also the 100% achievement guide and evolution guide.