Upgrade Chips: Unlock and Use

Upgrade chips let you improve cards in One Turn Kill, but they are easy to mistake for a reward that can be used anywhere. First unlock the upgrade facility, then spend the chips there. The facility opens after you beat Bias 6, so keep the chips you earn before that point instead of searching each battle screen for an upgrade button.

Unlock the Upgrade Facility First

If the upgrade option is missing, check your progression before changing menus. Beat Bias 6 to unlock the upgrade facility. Once it is available, use the facility to apply chips to cards. The game does not expose the full upgrade flow in the available reference material, so rely on the labels shown in your current version rather than assuming a particular button or screen name.

Higher-level boss clears can add new cards and upgrade chips to your progression. That makes the difficulty ladder useful for more than a harder fight: it expands the options available for later deck plans. When you are still unlocking the facility, focus on clearing the required progression step; after it opens, decide which card is worth improving before spending a chip.

Choose Cards That Fit Your Deck

A card upgrade is most useful when it strengthens a plan you already play. One Turn Kill limits a deck to 20 cards, and each battle asks you to finish in one turn. Before spending, ask whether the card appears in your usual deck, supports a reliable card-and-skill pairing, or helps complete your normal kill line. An upgrade that improves a card you rarely draw will have little effect on most fights.

Use this short review before committing chips:

1. Name the deck's plan. Decide how the deck draws, combines effects, and reaches its finisher.
2. Check the card's job. Keep upgrades focused on setup, a draw bridge, a payoff, or an answer to a recurring encounter.
3. Check compatibility. Cards and skills have different pairings; prioritize a card that already works with the skills in your build.
4. Consider the next boss. A narrow answer can be worthwhile when that boss is the blocker, but it may not help a general-purpose deck.
5. Read the preview. Compare the current and upgraded card in the facility before confirming. Do not assume an upgrade changes a specific stat or adds an effect until the in-game description shows it.

Avoid Spending Chips at Random

Do not upgrade a card just because it is new or looks powerful. A focused 20-card deck has limited room, so an upgrade should make a planned sequence more dependable. If your opening hand stalls, look for an upgrade that supports the part of the line that fails most often. If the deck already reaches its finisher but misses damage, inspect the payoff card instead. These are planning checks, not guaranteed outcomes; the exact value depends on the card text shown in your build.

It also helps to separate unlock progress from deck tuning. Higher difficulty can provide more progression rewards, but raising every boss at once is not required to test an upgrade. Keep the boss settings that let you reach the facility, then use later clears to expand your card choices. Change one part of a deck at a time so you can tell whether an upgrade solved the problem.

Upgrade Chip Checklist

• Beat Bias 6 if the upgrade facility is still locked.
• Save chips until you can compare the card's current and upgraded text.
• Prioritize cards that appear often in your chosen 20-card plan.
• Match the upgrade to a real draw, synergy, or finishing problem.
• Do not assume a chip changes a card in a specific way without checking its preview.

When do upgrade chips become usable?

They can be spent after you unlock the upgrade facility by beating Bias 6. The facility is where you upgrade cards; the chip itself is not a substitute for unlocking that progression.

Which card should I upgrade first?

Start with a card that appears often and supports your deck's main sequence. Compare its displayed upgrade before confirming, since the exact change depends on the card.

Do higher-level bosses give more chips?

The progression references connect higher-level boss clears with new cards and upgrade chips. Check the reward screen after a clear and use the actual rewards shown in your current version.