Here is the full list of all 21 Warpips achievements.
Kill 150 enemies with Missiles
Kill 500 enemies with Small Turrets
Complete Endless Mode with at least 100k points
Spawn 200 Vehicles
Complete Endless Mode with at least 50k points
LRV spawns Marines 50 times
Call in 150 Tactician artillery strikes
Shield Pip takes 4000 damage
Spawn 2000 Infantry
Complete the tutorial.
Beat the second island in the campaign
Mine $5,000 cash from Pumpjacks or Oil Derricks
Sniper kills 100 enemies
Capture every territory in the campaign
Beat the first island in the campaign
Marines fire 1500 grenades
Beat Conquest Mode on any difficulty
Spawn 35 Spec Ops Pips
Complete Endless Mode with at least 150k points
Win the campaign on General difficulty
Beat the third island in the campaign