ASTRONAUTILUS – All Upgrades and Effects

I’ve compiled a list of all the upgrades in ASTRONAUTILUS along with their effects. This isn’t a strategy guide; rather, it’s a collection of notes I’ve gathered from upgrade stations during runs and my own experimentation. It’s aimed at helping me recall each upgrade’s effects when encountered in the Hub. If you notice any inaccuracies, please let me know so I can correct them.

Autobarrier

• When enemies drop pearls, they create barriers upon death.
• These barriers manifest as small circles where the enemy was defeated and absorb a few bullets.

Axolotl

• Grants +1 HP per stage for 4 stages.
• Subsequently provides a +5% increase in POW per stage.
• Opmerkelijk, the POW increase from this upgrade bypasses the maximum POW limit.

Battery

• Special bombs offer a stat boost upon use.
• PLASMA bombs provide a +5% Damage boost.
• MEND bombs grant +2 HP.
• BARRIER bombs offer a shield effect.
• These effects mirror the benefits of picking up a special bomb when already at full capacity, except for MEND Bombs, which have their effect doubled.

Knipperen

• Dashing now teleports your character.
• This teleportation doesn’t affect your momentum and instantly moves you in a chosen direction.
• It seems to have a slightly longer cooldown compared to the regular dash.

Bounty Hunter

• Increases the frequency of caches and cache nodes appearing in the game.

Cloak

• Grants immunity to contact damage.
• Provides triple invincibility frames after being hit.

Crown

• Causes bosses to drop double pearls, yielding at least 400 instead of the usual 200.
• Aanvullend, increases the maximum POW by 30%, raising it to 60%.

Deadeye

Enhances all weapons with specific improvements based on the weapon type.

• BASIC: No additional effects.
• FLARE: Increases range.
• BURST: Boosts range and accuracy.
• PUNCHER: Widens spread.
• NEEDLER: Increases charge capacity without affecting charge time.
• FIREBALL: Enlarges projectile and blast size.
• LASER: Widens beam.
• AURA: Increases radius.
• FLAKSHOT: Fires an extra projectile.

Discount

• Grants a 25% discount on items in shops.
• Increases the stock of items in shops by one.

Gamble

• Grants a 99% discount on items in shops.
• Allows for rerolling items into anything when using a bomb.
• These effects only trigger when rerolling a shop’s items.

Hourglass

• Significantly extends the duration of the Pearl Chain timer.
• Feels like the duration is at least doubled compared to the regular timer.

Ionize

• Causes weapons to shoot bonus bullets, with the effect scaling based on POW.
• No effect at 0% krijgsgevangene, small effect at 5%, and maximum effect at 30%.
• Different effects for each weapon type:
  • BASIC: No additional effect.
  • FLARE: Extra bullets appear in a spray after the base bullets expire or hit something.
  • BURST: Extra bullets appear perpendicularly after the base bullets expire or hit something.
  • PUNCHER: Extra bullets appear and “bounce back” towards you after the base bullets expire or hit something.
  • NEEDLER: Extra bullets appear while charging and target the nearest enemy.
  • FIREBALL: Extra bullets appear in a spray after the base bullet hits something.
  • LASER: Extra bullets appear perpendicularly all along the fully charged beam.
  • AURA: Extra bullets appear in a spray around the base bullet as it moves. (Fewer bullets spray for the half-charge version)
  • FLAKSHOT: Extra bullets appear after applying the damage over time effect and target the nearest enemy to the enemy taking damage over time.

Magazine

• Grants a random weapon for the next 3 stages.
• Provides a +10% damage and +10% POW boost.

Opmerking: The random weapon selection does not consider your current weapon, allowing for potential changes from one type to another.

Schelp

• Triggers a bomb on the next 4 hits, activated after taking damage.
• Doubles the duration of bombs.

Sushi

• Grants +4 HP.
• Causes shops to sell food items.
  • CRAB CLAW: +1 HP, +1 Schild.
  • TAKOYAKI: +1 HP, +5% Schade.

Spanning

• Causes all bombs to inflict damage.
• Doubles the number of plasma bomb pickups, resulting in two pickups in each Plasma Bomb bubble.