Spin To Upgrade Jack O'Grin Plaza Boss and Jack Slayer Badge

Jack O'Grin is a Halloween event boss in Spin To Upgrade who spawns at the plaza. Defeating him with other players awards the Jack Slayer badge alongside event progression in servers with up to six players.

Plaza Boss Encounters in Spin To Upgrade

The central plaza serves as the shared battleground where players gather to challenge cooperative encounter bosses. Jack O'Grin appears directly in this plaza area as a featured seasonal boss encounter. Servers host up to six players, allowing visitors in the instance to combine their pickaxe attacks against the target.

Spin To Upgrade features multiple distinct plaza bosses tied directly to the game's official badge tracking. Defeating each boss at the plaza registers a completion credit for all participating players.

Outside of the Halloween Event, regular plaza rotations feature elemental encounters including Lava Golem, Ice Golem, and Electric Golem. Each of these encounters follows the same group format at the plaza hub.

Jack Slayer Badge Requirements

Earning the Jack Slayer badge requires landing hits and helping take down Jack O'Grin before the encounter concludes. The official badge description specifies that players must help defeat Jack O'Grin at the plaza.

This objective stands alongside eight other official badges released by developer Tier Up Studios:

1. Join the server to receive the Welcome to Tier Up badge.
2. Mine ores until discovering a first gem for the Gem Discovery badge.
3. Step into the designated AFK zone to collect the Enter the AFK zone badge.
4. Defeat elemental threats at the plaza to register Lava Tamer, Icebreaker, and Storm Chaser badges.
5. Win a Red vs Blue team competition for the Race Champion badge.
6. Protect seasonal items during candy defense to collect the Bowl defense badge.
7. Assist in eliminating Jack O'Grin at the plaza to complete the Jack Slayer badge.

Because server capacity limits each room to six participants, coordinating with present players ensures sufficient damage output to complete the encounter quickly.

Halloween Event Passes and Upgrades

The appearance of Jack O'Grin coincided with the introduction of Halloween Event mechanics and limited-time account upgrades. Tier Up Studios added special shop options specifically designed to accelerate event currency collection.

The 2x Candy pass provides a direct boost to Candy collection during the seasonal celebration, expiring when the event concludes. Players combining base swing upgrades with active plaza participation can clear the Jack O'Grin encounter and secure their event rewards before the encounter rotates out.