Allow the player to create a list of stages and enemies.
Stage design I think would be pretty hard to implement, so instead just have a number of pre-made stages available.
Enemies and initial position shouldn't be too difficult, but that is speculation.
Score if applicable could involve time and status of robot if posting to a score board.
New Idea:
I mentioned platforming before, but why not "borrow" from shadow of the colossus and introduce SpiderTron 50000?
More for novelty given the complexity.
New Idea: (To actually consider)
Ninja Boss Bot. You have limited time to block, after which the boss is stunned/ recoils and you can attempt a strike.
I mentioned in another thread about arena hazards the idea of fire (or plasma) causing damage over time and spreading.
Worth mentioning a flamethrower/ plasma-thrower, but I think that may turn out to be imba. Unless the range or effectiveness was dampened, like needs a constantly applied before the burning takes affect. Just a thought.
First thought reading this was a giant squid in Super Mario Sunshine. In the harbour area.
While in that mode you pull off the tentacles, perhaps the horizontal slash could take off the tentacles while rotating or something like that.
The squeezing idea sounds like it would be an insta-kill unless you have some "degradation" concept planned. Choreograph also sounds like it may be difficult.
Fire? I suppose you could allow it to burn away nearby blocks from the affected area.
Electricity? Shock the enemies making them vulnerable.
Oil/ Sludge? Slow the enemies making them vulnerable.
Water you short circuit, I guess. Not fond of this idea.
I suppose it would add to the tech tree, but you could add to the skills "Environment Resistance" as of course you'd be affected as well.
