Abyss Quest Guide

Quests are best when they remove friction

Scientist is the clearest example. The teleporter is not flashy, but it makes every future sell, shop, and quest route shorter. That kind of quest has outsized value.

Quests are stronger when they overlap with your money route

Diver and Marcus are not just quest names. They are also timing markers for when your route begins funding Boat Tube, Crossbow Gun, and later Ancient Sands progression.

Not every quest chain is an early-game checklist item

Abyss has many named NPC lines, but some are clearly advanced branches. Lost Captain is the best example: even though the map label is familiar, the actual requirements are late-game.

Location: Forgotten Deep

This is the first quest chain public progression guides consistently treat as mandatory. It gives structure to your first hour, pushes you through the starter loop, and is tied to the Normal Tube reward path.

When to do it: Immediately. Take these before you drift into random fishing.

Location: Forgotten Deep

Scientist is the teleporter unlock. This is one of the highest-value utility quests in the game because it shortens every future sell, quest, and restock trip.

When to do it: Finish before you fully leave Forgotten Deep.

Location: Forgotten Deep / Ocean route

Diver is the most commonly recommended cash-and-shard bridge into your Boat Tube timing. Even when exact payouts vary, public guides consistently frame this chain as a strong funding route.

When to do it: As soon as you can clear them without stalling your Kraken and Scientist progress.

Location: Forgotten Deep

This line matters because it overlaps with mutation play, oxygen supplies, and artifact-related progression. It is not the first quest chain to rush, but it scales well once your Radar and route discipline are sorted.

When to do it: Start after your starter route feels stable and you can reliably identify mutations.

Location: Ancient Sands

Marcus is the clearest midgame quest spike. Game8 documents a full six-step chain with money, Star Shards, pods, geodes, and the Burger reward that unlocks Grumpy Hank.

When to do it: Once you have practical Ancient Sands gear, not the moment you barely enter the zone.

Location: Ancient Sands

This is a follow-on chain, not a first-arrival objective. It depends on finishing Marcus and functions more like a continuation branch than a replacement for Marcus.

When to do it: After Marcus, once Ancient Sands farming no longer feels unstable.

Location: Spirit Roots

These are late-game quest tracks. The exact efficiency ranking is less uniformly documented than Marcus, but public quest lists clearly place them in Spirit Roots and treat them as progression content for established gear.

When to do it: Only after Spirit Roots is actually farmable for you.

Location: Forgotten Deep (far east)

This is a late-game branch despite its familiar map label. Game8 describes high-level, chest, and rare fish requirements, so this is not part of a normal early route.

When to do it: Treat as advanced side progression, not as a starter checklist item.

Late branches that look cool but do not stabilize your route

Lost Captain, deep Spirit Roots chains, and more demanding side branches can wait until your oxygen, gun, and tube setup already support the zone comfortably.

Ancient Sands branches unlocked off Marcus

Grumpy Hank is valuable, but Marcus is the real midgame anchor. Treat Grumpy Hank as a branch after Marcus rather than a reason to ignore Marcus's own chain.

Mutation-heavy lines before Radar discipline

If you still cannot reliably identify what you just caught, mutation quests are going to feel slower than they need to. Buy Radar early and let that tool pay off first.

Trying to clear every quest as soon as you meet the NPC

Abyss has many quest chains, but they are not equal in timing value. Kraken, Scientist, Diver, and Marcus are practical progression chains. Late branches like Lost Captain are not.

Walking into Ancient Sands to do Marcus too early

Marcus is valuable because his rewards are good, not because he must be touched the instant you unlock the zone. Public progression coverage points to Boat Tube and Crossbow Gun as the comfortable Marcus setup.

Ignoring daily quest boards after unlocking teleporters

Daily quests sit beside teleporters and pay money plus Star Shards. Once your travel network is live, leaving these unclaimed is one of the easiest recurring losses.

Treating mutation quests like normal catch quests

Mr. Black, Marcus, and several side chains become much less annoying once you own Radar and can deliberately route for mutation targets instead of guessing.

Using quests as a substitute for route planning

Quest chains are strongest when they overlap with your fish route, your buying plan, and your current zone. They are weakest when you bounce between objectives with the wrong tube or gun.

Which quests should you do first in Abyss?

Kraken's Quest, Scientist's Quest, and then Diver's Quest are the safest early priority. That order matches the part of the game where quests most directly improve your route, your travel time, and your first major purchases.

Is Marcus worth doing as soon as you reach Ancient Sands?

Not always. Marcus is a major midgame chain, but public guides recommend doing it once Ancient Sands is actually comfortable for you, usually with Boat Tube and Crossbow Gun rather than a barely functional setup.

Are daily quests worth doing?

Usually yes, especially after teleporters are online. Game8 says each quest board gives four daily quests and rewards money plus Star Shards, so these become much more attractive once travel friction drops.

Should you try to finish every side quest in Forgotten Deep early?

No. The better rule is to finish the chains that unlock progress or reduce friction first, then return for optional side branches when your gear and oxygen economy are stronger.

What quest unlocks Grumpy Hank?

Game8 ties Grumpy Hank's chain to Marcus. Finishing Marcus gives the Burger reward, which you then deliver to Grumpy Hank to start that branch.

Primary source for quest giver names, quest chain counts, and zone placement across the game.

Confirms quest boards beside teleporters, reward types, and that the reset starts after completion.

Confirms which early quest chains are part of the practical progression route, especially Kraken and Scientist.

Used for Marcus-specific routing, reward structure, and gear recommendations in Ancient Sands.

Confirms Grumpy Hank unlocks after Marcus and that the Burger reward starts the chain.

Supports zone traversal context, NPC positioning, and the Scientist teleporter role.