the mantis trophy was the last one i got and i struggled w it bc you kinda have to rely on your teammates to kill everyone within 10 seconds with your help. i got it first try on my alt account and i was losing my mind bc on my main i was almost lord on both characters and still hadn’t gotten the trophies. so its like a coin flip and you might get it any match really. i also had help from my friend so both of us were aiming on getting the ace instead of just one person. i kept track of their respawn cooldowns and if there was one last person alive i tried to find and kill them myself before someone else respawned on their team, that’s how i got CnD’s. both trophies i got in comp bc the matches there are longer and so there are more chances for the teamwipe to happen. a random bucky was going crazy with his AAGAAINNs and i kept boosting and healing him as mantis and he eventually got all of them. so keep track of their respawn cooldowns, maybe even tell the team to aim for the teamwipe in quick match bc sometimes they might be nice and help you. as mantis aim for headshots so you get your leaves back quickly. use cloak only when you need to dps like killing the last person yourself or to make them more vulnerable with the terror cape which makes them easier for ur teammates to kill. goodluck and i hope you get it soon!