Rune TD rev6

Defense style map for up to 6 players. Use your Rune Gateway to summon runes, create your own maze, and spell powerful runewords for defense.
(expansion of Undrawing's Rune TD)

rev6
- Creep regen now done by triggers
- Prevent Monster Heal works differently
- Holy Thunder revamped, takes less hits to reach max armour reduction
- Fortitude Frost Shell now Frozen Orb, does damage
- Fury spell now works slightly differently
- Initial Difficulty Select dialog timeout is now longer
- 'Runner' now invisible as intended.
- Fixed end-game

rev 1 - 5 summary
- cleaning up potentially fatal triggers and abilities
- making Rune TD more difficult for longevity

By undrawing on Jan-02-08