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BUNNYBastion Best Upgrades What to Pick and Why

Updated 2026-06-11

This guide covers the BUNNYBastion best upgrades and explains which ones you should prioritize depending on your playstyle and the enemies you face. Choosing the best upgrades in BUNNYBastion can be the difference between an easy clear and an early defeat. With a roguelike upgrade system that offers random choices after each wave, knowing which upgrades offer the most value will dramatically improve your success rate and help you survive the later waves.

BUNNYBastion upgrade selection screen
BUNNYBastion upgrade choices after a wave

Top Offensive Upgrades

Offensive upgrades form the backbone of any successful BUNNYBastion run. Among the best upgrades in BUNNYBastion for damage output are those that add multi-target capabilities to your attacks. Splash damage upgrades allow your attacks to hit multiple enemies in a radius, which is invaluable against the dense enemy formations that appear in later waves. Pierce upgrades let your attacks pass through enemies, hitting everything in a line. Both of these effectively multiply your damage output against groups without requiring better aim. Attack speed upgrades are also excellent they increase your raw damage per second and synergize well with on-hit effects.

Critical hit chance and critical damage upgrades offer multiplicative scaling that becomes increasingly powerful as you stack them. If you see a critical hit upgrade early in a run, it is almost always worth taking. Similarly, damage-over-time effects like burn or poison can stack on enemies and provide sustained damage while you focus on other targets.

Essential Defensive Upgrades

Many new players make the mistake of ignoring defensive upgrades entirely, but they are among the best upgrades in BUNNYBastion for ensuring you survive long enough to deal damage. Health regeneration upgrades provide passive healing between waves and during lulls in combat. Damage reduction upgrades reduce the impact of every hit you take, effectively multiplying your total health pool. Shield or barrier upgrades that grant temporary invulnerability on a cooldown are game-changers against elite enemies and boss waves.

Take at least one defensive upgrade in your first three waves. Even a small amount of health regeneration or damage reduction will save you from many deaths in the mid-game.
BUNNYBastion upgrades and strategy video

Skill and Utility Upgrades

Skill upgrades reduce cooldowns, increase duration, or add additional effects to your active abilities. These are often undervalued but are among the best upgrades in BUNNYBastion for experienced players. A skill that is available twice as often effectively doubles the value of every other upgrade that synergizes with it. Cooldown reduction is particularly strong because it provides uptime on your most powerful abilities without requiring any change to your gameplay. Utility upgrades like increased movement speed, pickup range, and bonus currency from waves also provide significant value.

Build Synergies to Look For

The true power of the best upgrades in BUNNYBastion emerges when you combine them into synergistic builds. An attack speed upgrade combined with an on-hit effect like burn or poison creates a powerful damage-over-time machine. Cooldown reduction combined with a barrier or shield skill makes you nearly invincible. Splash damage combined with critical hit upgrades clears entire waves in seconds. As you play more runs, you will start to recognize which upgrade combinations work well together. The key is to identify a core synergy early in the run and commit to it, rather than taking a little bit of everything.

FAQ

What are the best upgrades in BUNNYBastion for beginners?
Beginners should prioritize splash damage, health regeneration, and attack speed upgrades. These provide immediate, noticeable improvements to both offense and defense.
Should I focus on one upgrade type or diversify?
It is generally better to focus on one or two synergy categories. A specialized build with synergistic upgrades will outperform a generalized build with unrelated bonuses.
Are defensive upgrades worth taking?
Absolutely. Defensive upgrades like health regeneration and damage reduction are among the best upgrades in BUNNYBastion, especially when enemy damage scales significantly in the mid-game.
How important is cooldown reduction?
Cooldown reduction is one of the most powerful stats because it increases the uptime of your active skills. More skill uses mean more damage or crowd control depending on your loadout.
Can I change my upgrade choices after picking?
No, upgrade choices are permanent for the duration of a run. If you are unsure, prioritize upgrades that provide immediate value rather than speculative late-game synergies.

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