If you want to make it more difficult, it would be kind of cool to make the highly intelligent animals psychic. Which gives me an idea:
The Thrumbo, when threatened, broadcasts a percentage of its pain to all nearby enemies. This means if you attack it with a shotgun, your colonists feel like they took a shotgun wound. The colonists aren't actually wounded, they just feel that way. Now, the pain would be reduced a little because otherwise incapacitating a Thrumbo would incapacitate your whole colony as well, but the idea is that the thrumbo is a peaceful creature that's capable of defending itself without killing. When combined with it's horn attack, this ability lets the Thrumbo down a colonist with only a couple strikes. BUT, the colonists aren't necessary at risk of death. If the Thrumbo escapes or is killed, the effect fades away over a short time.
For sake of argument, Colonist's psychic pain = .5*Thrumbo's pain. Multiplier to be adjusted for balance.
Now, this leads to the question: Should tamed Thrumbos cast this ability only to enemies, making the creature very valuable? Should the effect stack with multiple thrumbos, or would that be too powerful? I think the best compromise is a non-stacking, enemies-only effect. Either way the Thrumbo becomes super effective for defending a colony as the psychic attack's effectivness scales with the number of organic enemies.
As a bonus, the new Thrumbo boosts the gameplay value of the tinfoil hat, as both raiders and colonists will need it to harm thrumbos, and if the thrumbo defense mechanism is universal, then your colony will need tinfoil hats to prevent a friendly thrumbo's defense from backfiring onto the colonists.
The Thrumbo, when threatened, broadcasts a percentage of its pain to all nearby enemies. This means if you attack it with a shotgun, your colonists feel like they took a shotgun wound. The colonists aren't actually wounded, they just feel that way. Now, the pain would be reduced a little because otherwise incapacitating a Thrumbo would incapacitate your whole colony as well, but the idea is that the thrumbo is a peaceful creature that's capable of defending itself without killing. When combined with it's horn attack, this ability lets the Thrumbo down a colonist with only a couple strikes. BUT, the colonists aren't necessary at risk of death. If the Thrumbo escapes or is killed, the effect fades away over a short time.
For sake of argument, Colonist's psychic pain = .5*Thrumbo's pain. Multiplier to be adjusted for balance.
Now, this leads to the question: Should tamed Thrumbos cast this ability only to enemies, making the creature very valuable? Should the effect stack with multiple thrumbos, or would that be too powerful? I think the best compromise is a non-stacking, enemies-only effect. Either way the Thrumbo becomes super effective for defending a colony as the psychic attack's effectivness scales with the number of organic enemies.
As a bonus, the new Thrumbo boosts the gameplay value of the tinfoil hat, as both raiders and colonists will need it to harm thrumbos, and if the thrumbo defense mechanism is universal, then your colony will need tinfoil hats to prevent a friendly thrumbo's defense from backfiring onto the colonists.