Suggestions
Arena Style
- Ancient Ruins - Desert
- Ancient Ruins - Jungle
- Ancient Ruins - Tropical
- Colosseum
- Battlefield - Grassy Plain
- Village
- Burnt Village
- Ship (Pirate or something, could be made to look pretty cool)
Enemy Types
- Archers - Ranged
- Crossbowman - Ranged
- Brutes - Heavy hitter, but slow windup
- Knight - Medium Damage, Medium Speed
- Horseback Knight - Fast and Medium Damage, but vulnerable to thrown weapons and trap weapons (more on that later)
- Barbarian - High Damage, High Speed But Dumb, Uncoordinated AI
- Wild Beasts - Lions, etc
- Monsters - Ogres, Goblins, etc. (If planning to go a more fantasy route)
Weapon Types
- Javelin/Spear (Thrown weapons)
- Caltrops (Anti-Horse weapon)
- Katana (Quick, sweeping hits, maybe a rare item)
- Flail (Would be cool to implement with the physics)
- Rope Bow (Pull Knights off of horses, probably other uses)
- Tactical Nuke
- Great Sword
- Chakram
- Magic? (If you want to keep it in the realm of reality, maybe not the best choice)
- Staff
- Flintlock Pistol
- Greek Fire (Environmental Hazard)
- Bow (With the potential to shoot an arrow through fire, making a fire arrow.)
- Throwing Stars
- Sword + Shield
There ya go buddy. That's all I can think of at the moment.