Quick answer
Official facts confirmedOld saves can earn achievements, but old feats do not unlock them retroactively.
Tracking starts after you download 1.0. Most devcommands permanently flag the character and world used, while some exceptions and temporary cheat states exist. If achievements matter, continue from a clean state and keep experimental worlds and characters separate.
Old-save rule
You do not need a new save just to earn achievements
The official FAQ says achievements begin tracking once 1.0 is downloaded. An old character or world can therefore be eligible, but the game will not look backward and award an achievement simply because you defeated Eikthyr before tracking began.
If an achievement requires an action you completed before 1.0, expect to perform the qualifying action after tracking starts unless the final achievement description says otherwise.
Cheat boundary
Permanent flags and temporary states are different
| Question | Status | Answer |
|---|---|---|
| Most devcommands | Permanent flag | The character and world used are permanently marked for achievement purposes. |
| Spawned items | Flagged | Spawned items are marked; carrying cheat-created items can affect the current state. |
| Holding cheat items / hammer mode | Temporary state | Some achievements can be blocked while the cheated state is active. |
| Documented exceptions such as freefly | Exception | The FAQ says some commands do not apply the permanent flag. |
Choose the path that matches your goal
Achievements matter
Use a clean character and world, avoid devcommands and spawned items, and preserve a backup before experimenting.
You already used commands
Do not assume a fresh world clears a flagged character, or a fresh character clears a flagged world. Keep both sides of the clean state separate.
You do not care about achievements
The official rule still matters for understanding the save state, but it does not prevent you from choosing an experimental play style.
What waits for September 9
The full achievement list, exact unlock conditions, platform menus, synchronization behavior, and final exceptions are not confirmed yet. Check the release documentation before planning specific unlocks.
Version & sources
Sources & what may change
- Applies to
- Valheim 1.0 achievement eligibility
- Last verified
- September 4, 2026
- When to check again
- The final achievement list and platform rules may clarify eligibility and unlock conditions.