Crystals help you prepare for your next run. Spend them on Campaign health and damage upgrades or additional Arena fighters. Unlike temporary resources, collected crystals stay with you after a defeat.
Where to earn crystals
You can find crystals while exploring Campaign and earn them by defeating bosses. Explore the available areas: some pickups lie off the main path.
Each completed Arena wave awards 2 crystals. Arena and Campaign share a wallet, so you can earn crystals in Arena and spend them on permanent Campaign upgrades.
On Android, the Campaign and Arena menus also offer optional ads for 45 crystals, when an ad is ready and your ad settings allow it. The reward is granted after the advertising service confirms it. Simply opening or closing an ad does not guarantee a reward. There are no ads on PC.
What survives a defeat
Defeat ends the current run, but does not reset permanent progress.
| Kept between runs | Only for the current run |
|---|---|
| Collected and earned crystals | Combat experience and level |
| Purchased permanent upgrades | Chosen temporary upgrades |
| Purchased Arena fighters | Unspent upgrade points |
| Unlocked Campaign districts | Sticks and poop |
Crystals are worth collecting even during an unsuccessful attempt: they can help you prepare for the next one.
How permanent upgrades work
The Campaign hub offers two upgrade paths:
| Path | Per level | Maximum |
|---|---|---|
| Health | +20 HP | +200 at 10 levels |
| Damage | +5 basic attack | +50 at 10 levels |
Each path has its own next-level price. Buying health does not increase the price of damage upgrades.
Successive levels cost 5, 10, 15, 20, 25, 30, 35, 40, 45 and 50 crystals.
Maxing out one path costs 275 crystals, or 550 for both. There is no need to buy everything at once: upgrades are permanent, so you can build them up gradually.
These bonuses apply to Campaign. Arena fighters use their own stats, while Open World characters have separate progression.
When playing as Kreit in Campaign, the permanent damage upgrade applies, but his health is set by Kreit’s own stats. The health upgrade path does not increase it in the usual way.
What to buy first
If you often die before finishing a district, try health first. If you can dodge reliably but take a long time to defeat enemies, damage may help more.
The first level of each path costs just 10 crystals in total: +20 health and +5 basic attack for the regular Campaign hero. It is an inexpensive way to try both upgrades.
There is no mandatory purchase order. Focus on what is holding you back, and remember that permanent upgrades complement movement, abilities and temporary upgrades during a run.
Other ways to spend crystals
Some Arena fighters can be purchased with crystals after meeting Campaign requirements:
| Fighter | Crystals | Purchase requirement |
|---|---|---|
| Cyberpunk | 200 | Complete the cyber district |
| Cyberpsycho | 500 | Complete the cyber district |
| The Chosen | 600 | Complete the rooftops |
This permanently unlocks the fighter; it is not an entry fee for each Arena run. Having enough crystals is not enough on its own: you must meet the unlock requirement first.
Because the wallet is shared, buying a fighter leaves fewer crystals for Campaign upgrades. Choose whether you would rather strengthen your Campaign hero or try a different Arena fighting style.
Protecting your progress
The game saves permanent progress locally first. Version 1.4.6 supports Google Play Games sync on Android; it depends on your connection, account and service availability.
Check sync status before switching devices. You can also export a backup and keep the file separately. If asked to choose between local and cloud progress, compare the details before confirming: restoring an older copy may also restore an older crystal balance.
If you see a save error, address it first. Do not uninstall the game hoping that it will fix the problem.