Here is the full list of all 24 JetX achievements.
Win your first game
Travel your first 10 km
Travel 500 km total
Travel 384400 km total
Destroy 15 enemy rockets
Capture more than one player into a black hole
Pick up 30 pawn cores
Kill 50 enemies while under overload effect
Kill 100 players using Stinger
Kill 100 players using Brawler
Kill 100 players using Shaker
Kill 100 players using Swarm
Kill 100 players using Fist
Kill 100 players using Claymore
Hit enemies with rockets 100 times
Win on Gravity Arena in Energy Core mode
Kill 5 players in a row
Win a race without losing any HP
Connect to your friend in the game
Kill 100 players using Siphon
Attach more than one freezing field to one player
Dodge any missile
Win a deathmatch without dying
Be first in a race more than 80% of the track and win