Round 128, what could i have done better? : r/btd6

Why is the ultraboost ability grey? : r/btd6

My first time making it to round 200 and I was not prepared. I've only been playing for a week so I don't have everything unlocked yet but I'm loving the game

A deflation setup I previously posted here now reaches round 128 : r/btd6

This was my defense. Tier 5 and had about 1/4 health of its last health bar. Any tips on how I can improve? : r/btd6

Old reliable s : r/btd6

Deflation r100 least cash ($12845 spent) - ZMEHRFV : r/btd6

Made it to round 128 any way to make it to round 200? : r/btd6

Why is the boss not taking damage, the MIB should take care of lead properties right? : r/btd6

Been playing for about 2-3 months. Am I “good” yet? : r/btd6

Am I missing something or is the co-op challenge impossible to start? : r/ btd6