>>538580436
These are the upgrades I used.

>Floor
Junrock - wider explosion
Puff - reduced cost

>Wall
Repulsor - clears contamination
Thunder Lance - slow but paralyzes
Vortex - removed invisibility (for Tambourinist)

>Ceiling
Shock - thunderstorm when monsters die
Freeze - causes freeze
Chest Mimic - more damage

>KU-roro
Upgrade all of them

Keep reseting until you get these buffs:
>3% coin interest each wave
>1 more shop reset

Prioritize these 2 buffs afterwards
>5% coin interest each wave
>Increase inventory
>10x saturation fire buff (get this before reaching wave 20)

When shop appears, do the following:
>buy HP+5, buy HP+5, shop reset, buy HP+5, buy HP+5, shop reset, buy HP+5
>use them all immediately
>try to reach 100 HP before wave 25

Use the minimum amount of traps so you get interest on your coins.
>Clear 1-5 with other speed shooter and repulsion (push them off the map) KU-roro only
>Cleat 6-10 with Shock ceiling trap while using speed shooter and repulsion KU-roro

When Saturation Fire reaches 10, switch to using Freeze Jet & Chest Mimic on your killing zone
On waves without dangerous enemies, disassemble traps you won't use to gain more coin interest

How to deal with Tambourinist
>they usually spawn last on the LEFT spawn gate
>Vortex trap won't trigger because they are invisible so other mobs near them are required
>push some mob into them using repulsion KU-roro to trigger the vortex when Tambourinist is near the trap

Basic killing zone
Puff > Junrock > Mimic (Freeze Jets on both sides) > Mimic (Freeze Jets on both sides) > etc.

Hell yeah! I did it, bros!