The wave 20 boss is the run-ender for most players. It hits hard and spawns adds, so the fight is about sustain and positioning.
Why this matters
Beating wave 20 needs more than damage — you need to out-survive a long, punishing fight while still killing it.
Step-by-step
- Enter wave 20 with at least 80 Max HP and some Armor or Dodge.
- Bring Life Steal so the boss’s chip damage heals as you fight.
- Learn the boss slam telegraph and dodge it every time — that hit is what kills runs.
- Kill the adds first so they do not stack damage on you during the slam.
- Use your strongest weapon on the boss between dodges; never stand still.
What to prioritize
- Max HP 80+
- Life Steal 12 to 18 percent
- Armor 10+ or Dodge 30+
- High single-target damage
- AoE for the adds
Common mistakes
- Trading hits with the boss
- Ignoring the adds
- Entering with too little HP
The wave 20 boss is a sustain check, not a damage check. Bring lifesteal and enough HP to survive a full minute of trading. Kill the adds first so their damage does not stack during the slam cycle.
Dodge every telegraphed slam, because that single hit ends more runs than anything else on the screen. Between dodges, unload your strongest weapon and keep moving.