Friendly Spikes
Bouncing off a wall makes the spikes fire one splinter per level.
Everything on sale between waves: 33 items in five types, 8 synergies between pairs of them, and a handful of cursed cards that trade a cost for extra power.
The nest is always one of the stops in the shop: it heals every missing heart, pricier the more the bird is hurt.
Bouncing off a wall makes the spikes fire one splinter per level.
A flying companion that shoots enemies on its own. One more per level.
+50% damage per level.
Fire 30% faster per level.
Every shot fires one more feather per level.
Bouncing off a wall fans out 3 feathers (3 more per level).
Every flap drops a bomb below you. More damage per level.
Your feathers bounce off walls one more time per level.
Land on an enemy to crush it (6 damage per level) and bounce off.
Long-range shots drift 40% less per level.
Not offered to the Kestrel — its passive already covers long-range accuracy.
Feathers that travel far glow and deal +30% damage per level.
+20% chance of a critical hit (double damage) per level.
Every 6 shots releases a ring of 8 feathers.
Every 4 shots fires a stinger that pierces everything for double damage (every 3 at level 2).
Every burst of feathers repeats itself a moment later.
Grow thorns: anyone who touches you dies instead of hurting you. They come back after 12 s (3 s sooner per level).
The first hit each wave costs no health (one more hit blocked per level).
+1 maximum heart, and heals 1.
If you fall, come back once with 2 hearts.
After getting hit, stay invincible 0.6 s longer per level.
10% chance per level that a hit does nothing at all.
The hit is fully negated, not reduced — no damage and no knockback.
20% of your feathers per level catch fire and burn enemies for 3 s.
15% of your feathers per level freeze enemies, slowing them down.
Every 5 shots fires a bolt that jumps between 3 enemies (one more per level).
Every 8 bounces, lightning strikes every enemy on screen (4x your damage).
+1 coin on every bounce per level.
Every enemy you defeat drops +1 coin per level.
Arriving at the shop earns 10% of your coins per level (capped at 8 per level).
The shop costs 12% less per level.
A trade, not a trap: each one gives a real edge in exchange for a real cost.
Deal 80% more damage... but lose 2 maximum hearts.
Earn double coins... but the shop costs 50% more.
Fire 60% faster... but every hit costs you 2 hearts.
+1 feather on every shot... but you start each wave with one less heart.
Equip both pieces of a pair and the bonus kicks in for free — no extra card needed.
The bounce's feather fan fires twice as many feathers.
Spike splinters deal double damage and your thorns recharge twice as fast.
Your stomp explodes like a bomb.
Critical hits deal triple damage.
Every bounce gives bonus coins equal to your current streak.
Fireflies shoot sparks that always set enemies on fire.
Lightning bolts freeze everyone they hit.
The piggy bank gives double coins.