EDIT: Seems like 7.30 broke TC's ("clean" TC also doesn't work properly).

Features:
- unlimited Defense Units
- no mana costs
- no cooldowns
- no level requirements (abilities)
- no additional checks on Assaults/Pure Strategies

Install instuctions:
1. Download file
2. Go to \Steam\steamapps\common\dungeon defenders\TotalConversions\
3. Create folders if necessary
4. Unzip there
5. Copy your local heroes from \dungeon defenders\Binaries\Win32\DunDefHeroes.dun to \TotalConversions\UnlimitedBuild\ if needed
6. On pre-game screen click Configure, Conversions, choose Unlimited Build and then Launch
7. If you did these steps correctly you should see "Unlimited DU & Free Abilties (7.25b)" at the bottom right corner in the main menu.

Change-log
7.18b:
- removes Defense Unit -checks
- removes mana-checks (only from abilities)
- removes cooldown-checks
- removes level-checks (only from abilities)
7.22:
- removes invisibility check on Assault maps
- removes build checks on Assault maps
7.25b:
- bug fixes (hopefully)
7.29:
- no changes