Immune gainst Fire/Ice

[Silverthorn]

for the damage-reader you could do something with weapons maybe...
remember weapons have hp, too, and you can decide how much.

Actually, if I remember correctly, type-3-objects also have 500hp. Their hp can be decreased by the timer, for example (the hit_a:-thingy in t-3). Maybe you can do that timer-thingy by using that method............ just thinking