A normal run ends when the drill breaks the Glowing Core boss wall at 100 km. That wall is listed at 500,000 HP. On a public badge listing read 19 October 2026, Reach The Core had been awarded 561,715 times and Welcome 19,552,810 times, about 2.9% of Welcome holders.
Layer checks
| Layer | Depth | Boss wall | Do this before you leave |
|---|---|---|---|
| Grass | 0 m to 3 km | 100 HP | Clear the first dungeon. Sell at the trading post by the wall. Buy Drill Power if it is offered. |
| Dirt | 3 km to 10 km | 500 HP | Little walls start. A story scene with Crazy Zack and Simon plays at the wall. |
| Stone | 10 km to 17 km | 1,000 HP | Mutations begin. Loot Goblins steal items off the drill. Keep valuables in the bag. |
| Clay | 17 km to 24 km | 2,000 HP | The Void wall sets fuel to zero. Carry 3 to 7 coal and refuel immediately. |
| Fossil | 24 km to 31 km | 4,000 HP | Spiders join. Giant corpses are the efficient fuel if you can kill them. |
| Crystal | 31 km to 41 km | 10,000 HP | Fuel Leeches drain the tank. Stone enemies ignore guns and melee. Bring a pickaxe or explosives. |
| Toxic | 41 km to 51 km | 25,000 HP | The rest stop is swallowed. Its shop still stocks a Golden Medkit. Sell at the next intact post if you need coins. |
| Frozen | 51 km to 61 km | 50,000 HP | Hits slow you. The slow is listed as 25% on one enemies page and 50% on the layers page. |
| The Abyss | 61 km to 72 km | 100,000 HP | Mole Men arrive. Electric enemies move at 1.5x speed. |
| Void | 72 km to 84 km | 200,000 HP | Void enemies are tankier and, since 29 August 2026, 25% faster. |
| Glowing Core | 84 km to the 100 km wall | 500,000 HP | Carry 1 or 2 Golden Medkits or a Revive Kit. Kill priority is the wall, not a permanent Wolf Bat kill. |
Little and large walls repeat about every 700 m to 1 km. Structures spawn in the gap. Do not skip them. Dungeons are where scrap and chests come from, and scrap funds the cards.
Cards for the 100 km wall
Boss-wall notes name RPM Overclock, Ultra Drill, and Power Burst as the set that scales: more hits per second, stacking damage while the drill keeps contact, and a 5-second multiplier on that stack. An August 2026 100 km guide puts RPM Overclock, Drill Power, and Power Burst first, rates Health Regen, Team Health, and Engine Overdrive as strong, and says to skip Power Drive. Deadly Drill was later merged into Drill Defense.
If the team is built around one weapon, buy only that weapon's team card: Sharpness for melee, Firepower for guns, or Blast Power for explosives. Extra weapon cards raise the price ladder without helping the wall.
Classes for this goal
The 25 September 2026 letter board and the August 100 km guides do not pick the same classes. The letter board puts Goblin King, Prospector, Samurai, Executioner, and Priest in S, all at 30,000 Cores. The 100 km guides instead name Lucky Looter for chest and ore drops, Driller for wall damage and a 50% discount on Drill Power, Mega Drill, and Power Slam, Pirate for gold bars, and Reaper for Soul Orbs. Driller is C on the letter board and still the class that makes the wall cards cheaper.
A party that mixes loot, wall damage, and sustain clears dungeons faster than four copies of one fighter. For a solo first clear, Lucky Looter or Driller is the practical buy once you leave the free Miner.
The Wolf Bat
The Wolf Bat is listed at 5,000 HP on the 100 km wall. It teleports among four spots, charges an orb, throws it, then rushes players. At 0 HP it is stunned and fully heals within 10 seconds. Finish the wall during that window. One layers note says it returns every 100 km. Its own enemy note says it appears only once. Plan the 100 km wall as if it is there, and do not assume a later wall is empty.
After the wall
Breaking it is the Reach The Core badge. Infinite Mode continues through the rest of the Glowing Core to 1,000 km, then the Heart of the Earth. The Void Crystal tied to the 100 km wall is listed at 5,000 coins. Item and church notes call that drop guaranteed. A later layers edit says 25%. Pick it up if it is there, and do not restart a clear solely because it did not drop.