Noticed a problem with scores:
The hi score for a level does not always match the best score you got for a level. I just beat my current score for a level and it shows as a slightly different number on the map.
Um....I HATE It that sometimes my towers just sit there and don't attack. Is this caused by some spell the baddie has placed on me? It's really annoying. Still... 5/5.
Keep this post alive! Build guns in order, preferably close to each other: Machine Gun, Frost Tower, Sniper, Cannon, Machine Gun, Poison. Upgrades, in order (go 5/5 on one before going to the next): Skill (skull), Auto Up (XP), Frost Tower, Cannon, Cash Collecting, Damage, Poison, Gold, Fire, Shock. Once you have built your six towers, focus on upgrading reload for all guns except frost. If your cannon is near the frost tower, you will obliterate almost every wave. By the last wave you should have 8 reload on every tower (but frost) and almost max range on cannon and sniper tower. FTW!