Here is the full list of all 50 Arcadegeddon achievements.
Pay to Increase the Difficulty 50 times
Get 500 Kills with Nanotech Weapons
Defeat 25 Bosses
Unlock all Primary Surge Abilities
Get 500 Kills with Militech Weapons
Revive yourself using the Medic Drone
Help 50 downed teammates up
Continue a Run 10 times
Win 25 PVP Matches
Collect 100000 Tickets
Defeat all 4 bosses in a single run
Pick up 100 Health boxes
Use Surge Abilities 100 times
Heal teammates for 3000 hitpoints
Defeat the Data Daemon Prince Boss
Customize a Weapon
Defeat the Fury Boss
Destroy 500 Crates
Defeat The FFC Mech Boss
Get 100 Headshots with sniper rifles
Play through a Run of Adventure Mode
Defeat the FFC CEO Boss
Use a Surge Guantlet Ability
Win 10 PVP Matches
Win 1 PVP Matches
Equip a Plugin
Customize Your Surge Gauntlet Abilities
Complete the Tutorial
Stack 3 of the same hacks
Customize Your Characters Appearance
Play 25 Runs of Adventure Mode
Play 100 Runs of Adventure Mode
Open 500 Treasure Chests
Collect 51 Figurines
Defeat a boss with a melee attack as the final hit
Collect 10 Figurines
Collect 500000 Tickets
Get 500 Kills with ZeroCool Weapons
Get 500 Kills with Surge Weapons
Get 500 Kills with Infernal Weapons
Get 500 Kills with Demolisher Weapons
Get 500 Kills with each manufacturer type
Heal a full team of 4 with the Medic Drone
Freeze 10 enemies with a single Freeze Blast Ability
Kill 20 enemies while boosted by a single Shield Drone Ability
Kill 10 enemies using a single Major Tombot
Trap 15 enemies with a single Black Hole
Kill 15 enemies with a single Fireball
Kill 20 enemies with a single Pluggernaut Ability
Have a single Tiny Tornado get frozen, electrified and set on fire