Valheim’s 1.0 update added an achievement system, and with it a cheat detector that never forgets. If your character has ever typed a dev command such as spawn, that character and the world it was played in are marked as cheated, and no achievement will ever unlock there again. The mark is applied retroactively, so a Viking who used commands years before 1.0 arrived is already locked out.
Quick answer: Open the Achievements menu on your character. If it reads “Achievement progress is permanently disabled for this character due to having cheated,” that save is finished for achievements. Create a brand-new character on a brand-new world and never enter a cheated state on it.
What triggers the cheat flag in Valheim 1.0
The flag lands in two places at once. It attaches to the character file and to the world save, which means a cheated world can also poison an otherwise clean session. Some states are permanent and some are only temporary, and the difference decides whether you can recover.
| What you do | Result |
|---|---|
Use most dev commands (for example spawn) | Permanent lock on that character and that world. Not reversible. |
| Character used cheats at any point before 1.0 | Already marked as cheated. Not reversible. |
| Pick up an item someone else spawned in | Temporary cheat state. Achievements blocked while the item is in your inventory. |
| Enable Hammer Mode and similar world modifiers | Counts as a temporary cheat and blocks achievements. |
Camera-only commands such as freefly | Allowed. No effect on eligibility. |
Spawned items carry a visible “cheated” label on their tooltip, so you can spot them in a shared chest before they cost you anything. If you did not spawn them yourself, throwing every marked item out of your inventory clears the temporary state and makes the character eligible again. The person who spawned them does not get that second chance.
How to check whether your character can still earn achievements
stats in the console or /stats in the chat log. A cheated character shows a Cheater! label above its stats.
Achievement tracking restarts from zero at 1.0
Even a perfectly clean veteran save starts at nothing. The statistics that feed achievements only begin counting from the moment 1.0 is installed, so nothing you did in Early Access carries over. If you killed Eikthyr five hundred times before the update, you still have to kill him once more for the credit.
The same restart applies to the grinding achievements. Trees felled, honey harvested and dishes cooked before the update do not count toward the 500-style targets, so those tallies begin again on whichever character you settle on.
The confirmcheats safeguard and the freefly exception
Because the penalty is irreversible, 1.0 adds a confirmation gate. Type a cheat command on a clean character and the console answers with “That command is a cheat, please enter ‘confirmcheats’ in the console to use,” and nothing happens until you deliberately type confirmcheats. The console also warns that using dev commands is not recommended and will permanently disable achievement unlocks for that character and world.
Not every console entry is treated as cheating. Camera-only tools such as freefly are explicit exceptions and leave your eligibility intact, which keeps screenshot work safe. Anything that changes the game state, spawns items or alters your character is the category to avoid.
Note: mods sit outside this system entirely and there is no official mod support, so a modded install is not something the flag guarantees anything about either way.
World modifiers that count as cheating
The World Modifiers screen is the trap most players will hit without touching the console. Hammer Mode, which removes build costs, is treated as a temporary cheat and blocks achievements while it is active. Turn it on for a quick creative test and any building milestone you complete in that window will not register.
Because it is a temporary state rather than a permanent brand, switching the modifier back off restores normal tracking. Difficulty modifiers are separate and matter in the other direction, since some achievements specifically ask for normal or hard difficulty.
Run one clean character and one creative character
The practical fix is separation. Make a fresh character on a fresh world, never open the console on it, leave Hammer Mode alone, and refuse any spawned gear from friends. That save becomes your achievement run.
Keep a second character for the fun stuff. Testing builds, spawning bosses and flying around are all still available, they simply need to live on a save you have already written off. Since the flag hits the world as well as the character, the creative world has to stay separate too, not just the Viking standing in it.
Verification is straightforward once you are set up. Play normally for a few minutes on the clean save, reopen the Achievements menu, and confirm the unlocked counter has moved and no warning banner is present. If the counter is stuck at zero after clearing obvious early milestones, check the Cheats value in your stats before investing more hours.
Achievements are live on PC and consoles, and the in-game list mirrors the Steam achievement set, so a flagged save costs you the platform unlocks too. The in-game menu tracks 55 entries while the Steam and Xbox lists show 53, with several still hidden behind the “Only Odin knows what is hidden here” description. None of them will ever tick over on a character that has already been marked, which is why the cheapest move is to start clean now rather than discover the banner forty hours into a Deep North run.
