Here is the full list of all 31 Atomic Heist achievements.
Reach 200 arena kills.
Reach level 5 in SIGC.
Reach 100 arena kills.
Collect 5 super power ups.
Collect all 10 records.
Kill 100 enemies with the Frag ammo.
Unlock the XF-490 ship.
Kill 100 enemies with the viscid frag ammo.
Unlock the XF-480 ship.
Unlock the MF-310 ship.
Kill 100 enemies with the flak ammo.
Unlock the CF-240 ship.
Kill 100 enemies with the U235 ammo.
Kill 100 enemies with the plasma ammo.
Kill 100 enemies with the Proton ammo.
Complete the game using shortcuts.
Complete the game with out using shortcuts.
Unlock the CF-210 ship.
Complete level 9.
Reach 50 arena kills.
Kill 100 enemies with the HDF Slug ammo.
Kill 100 enemies with the Elastic ammo.
Kill 100 enemies with the Naplam ammo.
Collect all 20 reticles
Completed level 6.
Unlocks all 24 upgrades.
Kill 100 enemies with the Seeker ammo.
Collect all 32 avatars.
Kill 100 enemies with the Scatter ammo.
Completed level 3.
Kill 100 enemies with the M127 ammo.