Age of Wonders: Planetfall (PC) - Achievement - Make your own luck
Score 7 successful critical hits in a single round of combat
The ability to score a critical hit is based on two things - unit happiness and MOD's. To obtain this achievement I played as the Assembly as their Vorpal Snipers have the 'Vorpal Shot' ability which is a 'Power Shot' giving it a +15% crit chance. I also outfitted them with a particlar set of MOD's in the Synthesis tech tree:
- Targeting Daemon Shell: +10% crit chance (amongst other things)
- Ocular Implants(Detector): +20% crit chance (amongst other things)
- Kinetic Phase Modulator: This doesn't increase crit chance at all, but allows it to ignore 50% of accuracy penalties from line of sight and units in the way. My logic behind this being - You can't crit if you don't hit.
Depending on your race / tech, there may be other MOD's equally or more suitable, but this is a good starting point.
I did this late game after I had 'The Re-Cycle of Life' Doctrine enacted, giving all units +400 morale. I also had a good relation with my race, proving a further +200 morale, so morale of all of my snipers was maxed out.
Once the above has been done, it's just about getting the numbers in the fight - Ideally at least 3 full groups of snipers against as many enemies as possible. You may need to save and re-load as there is an element of chance.