Frozen Shot: cold based bullet puts a freeze debuff on enemies. Frozen enemies take extra damage and can't move. Extremely powerful against fire-immune mobs.

Venom Shot: long lasting poison, slow and weakness (ruination serum).

Molten Shot: Massive fire damage. Stupidly massive fire damage.

Fertile Shot: Weird bullet, not really for killing things. Fertilizes blocks it passes over; has a limit before it dissipates.

I've decided to completely ignore this. I'd rather work on the new gun mechanics than add to the old one.