This video shows some core mechanics of the game.
Game have two levels of difficulty:
Normal - in this mode you can enjoy smooth gameplay and nice music, but still sometimes spider can create difficult situations in level, so you always must be on alert. Spiders have less speed, and your character can open some extra helpful abilities to help him in critical situations.
Hard - this mode created for players who likes real hardcore !!) Watch out for robots weapon temperature, create more effective strategy, do everything to succeed when spiders become extremely fast and clever.