great game
still a little buggy but its ok now that the save is fixed. if you plan on making a sequel i have some suggestions.
Put all monsters and traps on a pannel, this would be much faster and easier than the current system.
Add some way of interacting during raid mode, such as a hero unit you control, a special trap that only works every 3 raids or anything else you control so it isn't all chance and preparation.
allow movement, deletion and upgrade of units and traps, in this game the front of my base had several units which didn't exist in raid mode but blocked the square they were on, this wouldn't be a problem using this. upgrading the traps would prevent them from becoming useless later in the game. a level 2 dart trap hardly scratches a level 20 warrior.
The final battle should require strategy, instead of placing as many high level creatures as possible in your dungeon.
Don't put repeating text boxes before each battle.
put in a "fun" mode with unlimited money allowing players to test how strong their dungeon making skills are.
Add a more detailed story..
overall this is a great game with lots of room for improvment,