ORIGINAL: stryc
The presence of the Absorption trait on tanky wildlife adds another level of effective difficulty all on its own; essentially, you can't do a damn thing to them until you've got tanks with chunky howitzers. This trait makes a TL3 start triple-hard (with TL3 start being double-hard in itself). Personally, I think the Absorption trait is broken and needs to confer proportional damage resistance not a binary threshold.
While starting at TL5, I had a Medusa world with 30+ meter xeno monstrosities. Many of them had both Absorption and one of the Hardness traits, essentially requiring that I field heavy tanks with big HV guns before I could reliably kill them or drive them away.
