Unlock Everything: The Complete 45-Achievement Checklist

This checklist covers the original 45 Steam achievements and their confirmed unlock conditions. The Steam updates on September 22 and October 1 also added Ana, Yung Venuz, new equipment and associated quests. Messhof has not published exact conditions for those quests or additions, so they are not part of the table below; do not treat the listed 45 as a route to unlock them. The October update is not confirmed for consoles. The conditions listed here are the official, exact ones. The percentage is the share of players worldwide who have earned it, which doubles as a difficulty rating: anything above 50% comes naturally, anything under 5% is a project.

Work top to bottom and you'll unlock things roughly in the order the game expects.

The complete checklist

How to work the list

• The top dozen need no planning. Play runs in the Catacombs, spend Bones after each one, and Pit, Pain Gains, Double Deagles, Leggy, Baby and more unlock themselves.
• Chain your weapon unlocks. Machinegun feeds Double Deagles, which feeds Laser, which feeds the Shield — each step is a single deliberate condition.
• Some conditions reward a dedicated attempt. Bug's 5 airborne seconds, Skinja's 2 hitless minutes and the under-30-second boss kills are all easier if you build the run around the condition instead of hoping it happens.
• Final bosses are the late game. Everything under ~6% on this list is a final boss, a full exploration, or a dedicated single-run challenge — expect them to come last.
• Bunkhouse is the endgame. Beating every level with every character is the rarest achievement in the game — save it for when the rest of this page is done.

For deeper dives, see the character roster, the arena chain, the weapon unlock chain and the Bone Shop guide. For the conditions that actually stop players, the achievements and trophy guide walks through the hardest ones step by step.