🛠️ Patch 1.5 – Mastery Mode, Online Co-op & Saved Builds

Hey!

Update 1.5 is here — and this is the biggest update so far.

This patch adds Mastery Mode, Steam online co-op, saved builds, the 15th upgrade row with ultimate skills, new arenas, Czech language support, and many gameplay, balance, and UI improvements.

Thanks again for playing and sharing feedback.

🏆 Mastery Mode

• Added Mastery Mode
  Mastery is a new long-term progression mode with its own levels, tiers, arenas, mutators, run rewards, and permanent upgrades.

• Mastery starts from level 0
  Progression is designed around gaining Mastery EXP and spending Mastery points on permanent upgrades.

• Added Mastery tiers 1–5
  Each tier increases difficulty and rewards.

• Added 5 Mastery arenas

  • Basement Nest

  • Cable Junkyard

  • Swamp

  • Port

  • Neon Nest

• Added Mastery contracts
  A Mastery run can be completed by surviving for 10 minutes or reaching the tier score goal.

• Added Mastery mutators
  Mutators increase difficulty and EXP rewards, with effects such as swarms, stronger enemies, elites, damaged cables, energy leaks, and no rerolls.

• Added Mastery gifts during runs
  During Mastery runs, you can choose temporary gifts every 120 seconds, with different rarities and rerolls.

• Added permanent Mastery upgrades
  Spend Mastery points on long-term upgrades such as HP, damage reduction, energy, skill cost/cooldown, loot, EXP, and starting energy.

• Added Mastery leaderboard
  Mastery now has a leaderboard based on total EXP.

🤝 Online Co-op

• Added online co-op through Steam
  You can now create and join Steam rooms, invite friends, use passwords, ready up, and start co-op runs together.

• Added co-op arena selection
  The host can choose the mission or arena before starting.

• Added player setup before the run
  Players can choose skins and builds before the game begins.

• Added separate co-op records and leaderboards
  Co-op missions now have their own score records.

• Added separate player resources
  Each player has their own HP, energy, active skills, cooldowns, status effects, damage handling, and HUD.

• Added co-op elimination and revive mechanics
  When a player dies, they can be revived through clicks.

• Added co-op-ready enemy targeting
  Enemy attacks, side effects, cables, projectiles, and damage effects are handled separately for the correct player.

• Status effects moved closer to the player
  Status effect panels now appear near each hamster, making them easier to track during co-op and regular gameplay.

🧩 Saved Builds

• Added saved builds system
  You can now create, preview, rename, delete, and select saved upgrade builds.

• Builds can be selected before runs
  Campaign and co-op now support choosing a saved build before starting.

• Campaign menu updated
  The campaign menu now supports build selection and shows skin icons more clearly.

🌳 Upgrade Skills & Ultimate Skills

• Added the 15th upgrade row
  The upgrade tree now includes a new 15th row unlocked at 30,000 score.

• Added Ultimate skill unlocks
  The 15th row unlocks a new 7th active skill slot: Ultimate.

• Added 5 Ultimate variants

  • Double clicks

  • Absolute protection

  • Infinite energy

  • Alien Abduction

  • Time Stop

• Gas Nova reworked
  Gas Nova now deals explosion damage and applies poison in a larger area.

• Active skills now support per-player state
  This allows co-op players to use their own skills, cooldowns, charges, costs, and upgrades independently.

⚖️ Balance & Gameplay Changes

• Upgrade row 3 rebalanced
  Several upgrade skills in row 3 were adjusted and nerfed.

• Mastery difficulty scaling added
  Enemy HP, damage, spawn pacing, and EXP rewards now scale with Mastery tiers.

• Loot system reworked
  Loot now uses one shared item system instead of several separate item rules.

• Drop pacing is now more consistent
  Loot drops now follow a more deterministic cycle, making item rewards feel less random and less streaky.

• Loot item effects updated
  Loot can now cover more types of run support, including:

  • healing

  • energy recovery

  • cable repair

  • cooldown reduction

  • temporary bonuses

  • stronger run utility effects

• Medkit and Glove updated
  Medkit and Glove are now part of the updated loot system and should fit better into the new item balance.

• Final boss leaderboard support added
  Final boss runs can now save leaderboard scores.

🎮 UI/UX Improvements

• Added new game mode selection menu
  The mode menu now includes Campaign, Co-op, Mastery, and Builds.

• Added Level Info menu
  You can now view more information before starting selected content.

• HUD updated for multiple players
  The HUD now supports player cards, separate skill states, separate resources, and hiding controls for non-local players.

• Added new UI icons and menu graphics
  New visuals were added for Builds, Co-op, Mastery, and multiplayer-related menus.

• Added new visual polish

  • Level particles

  • Object shadows

  • Improved layering consistency

🌍 Localization

• Czech language added
  Czech is now available as a selectable in-game language.

🔧 Fixes

• Fixed several run timer issues

💬 What’s next?

More fixes, balance updates, and gameplay improvements are on the way.
If you notice anything weird — bugs, balance issues, UX problems, or co-op issues — feel free to share.

Thanks for playing 🙏