engine: modified Unreal Tournament

• atmospheric/environmental effects
  • water: bubbles, drops (+ splash), ripples (+ splash drops), splash, underwater fog
  • weather: moving clouds
  • other: camera shaking, dust: broken objects, rock/weapon impact; move when collided with: bushes, chains, hanging bodies, mushrooms (+ emit gas), trees; smoke: fire, lava, Odin bust; flying "dragonflies", birds; swimming fish; steam
• particle effects: electricity, flying birds, rune circles, swimming fish
• shadows: projected, vertical angle adjustment
• transparency: blood, cobwebs, fire, light beams

player character

• character: burns, head turns towards things, incremental body damage
• footstep sound: gravel, ice, lava, metal, mud, snow, water, wood
• moves: block, climb, crouch (+ walk), eat, kick, jump, pull lever, run, throw

level design

• environmental interaction
  • breakable objects: enemies, rocks, sacks, some statues, some walls, wood (barrels, buckets, benches, stools, tables)
  • pickupable objects: runes, severed limbs/heads, shields, torches, weapons
  • rideable objects: hanging cages
  • throwable objects: severed limbs/heads, torches, weapons
  • other: climb chains (some) and vines; eat tree fruit; light torches, enemies, and wood objects on fire; torches extinguish in water, if swung a few times, or if used to hit things; swaying chains and vines
• traps/hazards: closing gates, falling rocks, fire, lava, horizontally crushing walls, spinning blades