Mycopunk Au-Si Jackrabbit Build: A-Tier Shotgun Guide for Burst Damage

If your favorite weapon in Mycopunk is the one that deletes whatever is standing in front of you, this Mycopunk Au-Si Jackrabbit build guide is written for that exact instinct. The Au-Si Jackrabbit lands in A tier on GamerBlurb's weapon ranking published October 21, 2026 — praised for single-target damage and incendiary depth, dinged for crowd control and a slide-heavy execution requirement. A good Mycopunk Au-Si Jackrabbit build does not pretend those weaknesses away. It leans into the strength and spends the rest of the loadout covering the gap.

Below is what the source material actually supports, translated into upgrade priorities, partner weapons, and the situations where you should consider a different primary.

Where the Au-Si Jackrabbit Sits in the Current Tier Snapshot

The ranking below comes from GamerBlurb's tier list, published October 21, 2026. It is a general-play ranking written for players who do not know the next mission's enemy composition — not a live meta tracker, so treat it as a dated snapshot rather than a permanent verdict.

Source: GamerBlurb's Mycopunk weapon tier list, published October 21, 2026.

The Jackrabbit's A-tier placement comes with a clear explanation: it is excellent when the target in front of you needs to die quickly, its strongest setups can tear through large enemies, and incendiary interactions give it more depth than a basic shotgun label suggests.

Two things keep it below S tier. When several threats arrive from different angles, it has to work harder than a Gunship Cannon or Plate Launcher to keep the whole fight under control. And some of its strongest damage setups reward constant sliding — an execution requirement not every player will enjoy.

Those two sentences are the entire blueprint for a Mycopunk Au-Si Jackrabbit build.

What a Mycopunk Au-Si Jackrabbit Build Should Prioritize

The same tier list makes a point that matters more than any individual placement: Mycopunk's upgrade system is transformative enough that no weapon becomes unusable, and lower tiers mostly reflect weapons that ask for more setup. A-tier weapons, in that framing, can still produce S-tier results once the build is specific enough. So treat the Jackrabbit as a specialist worth specializing.

1. Single-target payoff comes first

The Jackrabbit's identity is deleting the big thing in front of you. Every upgrade choice should be tested against one question: does this make a priority target die faster? If a node mostly improves your ability to handle scattered trash, it is competing with a job another weapon in your loadout should be doing.

2. Incendiary interactions are the depth layer

The tier list specifically credits incendiary interactions for giving the Jackrabbit more depth than a shotgun label implies. That is your signal to treat fire as part of the weapon's damage identity rather than a bonus. Builds that extend or amplify that status effect are the natural direction for a Mycopunk Au-Si Jackrabbit build that wants to scale into late missions — and the incendiary layer is also what can help a burst weapon keep working after the opening shot.

3. Slide uptime is a damage stat, not a movement stat

Because some of the Jackrabbit's strongest setups reward constant sliding, your movement discipline is effectively part of your damage output. If you enjoy sliding through fights, build for it and treat every stationary second as lost damage. If you do not, this is the single strongest argument for picking a different A-tier or S-tier option instead.

4. Leave room for a crowd-control answer

The Jackrabbit stops at A tier because of crowd control. Do not try to fix that inside the weapon alone — fix it in the loadout.

Pairing the Jackrabbit With the Rest of Your Loadout

The tier list is explicit that S-tier weapons are the ones you can bring into an unknown mission and trust to solve problems: they either cover several combat roles at once or make the rest of the loadout better simply by being equipped. That is precisely what a burst-focused primary needs beside it.

• Gunship Cannon — described as the best conventional primary, with dependable area damage that does not require enemies to be grounded, grouped, or close. A strong crowd partner for a Jackrabbit build.
• FR.15833 Plate Launcher — an S-tier pick with a learning curve around projectile gravity and plate placement, but high value once the return path clicks.
• Shocklance — S tier for damage scaling plus movement utility, and a safe early investment. Its own weak spot is shielded targets, so keep that in mind when building a two-weapon plan.
• Accelerator — called the natural choice for highly mobile play, which fits a Jackrabbit player already committed to constant sliding.

If you want to read more about the game itself before committing to a loadout, Mycopunk on Steam is the canonical reference for the current build of the game.

Where This Build Breaks Down

A Mycopunk Au-Si Jackrabbit build is not a universal answer, and the tier list is refreshingly direct about why.

Multi-angle pressure. When enemies come from several directions at once, the Jackrabbit has to work harder than an S-tier area weapon to keep the encounter under control. If a mission is built around swarms arriving in waves, you will feel the difference.

Slide-dependent damage. Setups that reward constant sliding add execution overhead. On a good run, that is free damage. Under pressure, it is one more thing to manage.

Narrow target profile. The Jackrabbit is at its best against the threat directly ahead. Missions that keep asking you to solve everything standing around that threat are where an S-tier pick pulls ahead.

Community resources for the weapon are still thin. The Mycopunk wiki's AU-SI JACKRABBIT page was last edited April 30, 2026, and as captured it holds little beyond the weapon name — so most of what players know about the Jackrabbit comes from in-game testing and third-party guides rather than documentation.

Practical Tips for Running the Build

• Open on the biggest target. The Jackrabbit's advantage is front-loaded against priority enemies. Spend it there instead of chipping at scattered enemies.
• Plan your second weapon around your weakest moment. If your runs fall apart when enemies surround you, pick the area weapon first and treat the Jackrabbit as the finisher.
• Do not neglect the incendiary layer. The tier list treats those interactions as the reason the weapon has depth — builds that ignore them are leaving the Jackrabbit's scaling on the table.
• Re-test your build against your own gameplay. Because the tier list ranks for general play with unknown mission layouts, a build tuned to your actual missions can outperform the ranking — or fall short of it.

FAQ

Is the Au-Si Jackrabbit good in Mycopunk? Yes, within limits. As of GamerBlurb's tier list published October 21, 2026, the Au-Si Jackrabbit sits in A tier — strong against single priority targets, weaker at keeping multiple angles under control.

What should I pair with a Mycopunk Au-Si Jackrabbit build? Something that handles crowds. The Gunship Cannon and FR.15833 Plate Launcher are the S-tier options the tier list trusts for general play, while the Shocklance adds damage scaling plus movement utility.

Do I have to slide constantly to make this build work? Not strictly, but some of the Jackrabbit's strongest damage setups reward constant sliding, per the tier list. If slide-heavy play does not appeal to you, another A-tier or S-tier weapon will likely feel better.

What is the best weapon if I want one gun for everything? The tier list names the Gunship Cannon as the best conventional primary and the Shocklance as the safest early investment, with the FR.15833 Plate Launcher taking the top spot for doing the most jobs at once.