Info Repository
Recommended Infantry unlocks: https://www.reddit.com/r/ps2info/comments/85k3j4/mentorrecommended_infantry_loadouts/

opshax's Vehicle loadouts: https://docs.google.com/spreadsheets/d/1T19St-Iq8LxFmdkH1PiZ6B4lzBbdmSim0MNaWERn5Nk

Fun facts I've gathered myself that doesn't appear in most other guides:

When exiting a vehicle, you'll always pop out in the same direction from it:

• Flash – right
  
• Harasser – left
  
• Sunderer – left front
  
• Lightning left
  
• Magrider left rear
  
• Liberator left front
  

If that side is blocked, will try to pop you out on other side. Seat position doesn’t seem to matter.

Explosive Crossbow bolts - can kill ESFs in 5 shots. Change in damage type means no more headshot multiplier, so cannot one headshot kill stock infiltrators. Knife combo still works but you will take splash damage making it suboptimal for an assassin build.

Drawing stuff on the map overlay - There are separate layers for personal and squad map markings, however ALL markings are cleared upon leaving a squad, even the personal ones.

Engineer Deployables - All of them except mines will despawn if you switch to a different class. Hardlight barriers and MANA turrets are under the same limit, you can only have 2 of them out at once and deploying another will despawn the first one. Spitfires do not count against that limit.