Enemy Champions are, as you'd expect, tougher enemies. There are eight in total:
- Hewpen Garratt
- Vorb Kibb
- Valadu Appakutt
- Kashaya Poross
- Anga Hake
- Quoy'dee Tuxem
- Fat'Allan Owa
- Karr Slabb
On the missions screen at Athena Station, press
to select the bounties tab. This will list all the champions you have encountered and a tick on the left side indicates if you have killed them.
They appear at random in some missions (although you'll be warned at the start of the mission that XXX has been seen in the area, and they always seem to show up after this warning) and on specific "Eliminate Champion" missions.
I found it incredibly difficult to kill them when they showed up during regular missions - they'd always run away before I could take them out. I only managed 1 of the 8 this way. Fortunately, an "Eliminate Champion" mission usually appeared not long after - they don't seem to run during these missions.
As is stated in the achievement description, champions must be killed in the same playthrough, so the related achievements are technically missable if you complete the campaign before killing them all. Whenever you see a champion, take the opportunity to kill them if you can, especially the "Eliminate Champion" missions. Doing this, I'd killed all 8 before the end of Phase 2.
To that end, I'd always Prioritise Target on the Champion (target them with
. Use whatever skills your gunners have and call in Fighter and Cruiser Support if you have them. There will always be regular enemies harassing you as well, so keep an eye on your ship systems and repair/use skills as required.
These can be some tough battles! You can lower the difficulty at the Mess Hall in Athena Station - press
, then select Automatic tagging mode, Casual difficulty and Unlimited slow time to make things easier.
I ended up using a Railgun on the front weapon, Autocannon High Explosive on both sides and Particle Beam at the rear, obviously as high a rating as possible. Other combinations can work just as well.
The achievement unlocks as soon as you kill your first Champion. You don't need to complete the mission, it unlocks right away.