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UnderMine 2News0.5.1 | Booster Pack #1 Update!
In-game event

0.5.1 | Booster Pack #1 Update!

UnderMine 2 · published 19 Dec 2025, 16:55 UTC · build 21249941

All newsPlayers around this dateRead on Steam

Two updates in the same month!? We are currently hard at work on our next big update which will feature fan favorite familiars, but we wanted to get something out for the holidays.

We really enjoyed working on this small, self-contained update and plan to do more between our larger ones.

This update is out now! So, no preview, just update notes:

Black Rabbit's Slingshot Gallery

Black Rabbit has opened a new minigame in the Undermine! Take careful aim at moving targets with your slingshot and get as many points as you can across 3 rounds. The more points you earn, the better the reward at the end.

30 New Items

Relics:

  • Aetherwing

  • Bandit King’s Crown

  • Black Grimoire

  • Black Vise

  • Escutcheon

  • Extractor’s Textbook

  • Faraam’s Ring

  • Mana Vault

  • Overward

  • Phoenix Tear

  • Rapacious Tome

  • Saproot

  • Silver Bow

  • Stormcoil

  • Voracicus

Bomb Relics:

  • Ticker Kit

Arcana:

  • Capacitor

  • Cruciferous’ Hedron

  • Emergency Supply Kit

  • Fire Ward

  • Lightning Ward

  • Memento Mori

  • Blue Mondo

  • Green Mondo

  • Red Mondo

  • Master Mondo

  • Pig Whistle

  • Ragnarok

Curses:

  • Dirty Dishes

  • Martyrdom

New Achievements

  • Mondo, dude!

  • Sharpshooter

  • Treasure on Demand

Holiday Cheer and a Gift from Thorium

Log-on to UnderMine 2 between December 21st and January 1st for some holiday cheer and to receive your gift from Thorium.

Boss Changes

Noori, Umbral Lord

  • Swipe, Flick, and Fireball animation speeds have been reduced

  • Lowered Noori’s Projectile Speed to make Fire Arc easier to dodge

  • Reduced the duration of water spawned by Snuff and Fire Arc

  • Increased Noori’s Think Time to give more time between attacks

  • Fixed an issue that caused the Flick attack range to appear much larger than the actual hit zone

  • Dark Beam warmup time has been increased

  • Noori will no longer snuff braziers if there are 2 or less currently lit

Other Changes

  • Bandits can now steal gold from (nearly) all humanoid enemies

  • Charisma now increases the max mana of your followers

  • Clay Heart has been reworked to now restore health and mana to your Allies

Bug Fixes

  • Fixed an issue preventing Dante’s fiery shockwaves from counting as shockwaves for the purposes of proccing things like Echo Saber

  • Fixed an issue that would allow Dante to continue moving while using his ranged attack after getting the Hellstar upgrade

  • Wraiths can now correctly attack even when they’re invisible

  • Fixed a lot of issues with charmed Mimics

  • Switching characters no longer causes your followers to aggro you

  • It should no longer be possible to reroll into the same curse back-to-back at the Altar

  • Fixed an issue with remapped inputs not loading correctly when entering co-op

Steam Winter Sale!

Don't forget, UnderMine 2 is on sale for 20% off during the Steam Winter sale!

We hope you all have a happy holidays and we'll see you in the new year with lot's more for UnderMine 2! Cheers!- Thorium

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