Primary:
AR - Free
BR - 10000 SP and Level 5
DMR - 40000 SP and Level 10
Assault Carbine - 70000 SP and Level 14
Secondary:
Magnum - Free
SMG - 20000SP and Level 5
AR - 50000SP and Level 7 (Not available with AR as primary)
Grenade:
Frag - Free
Plasma - 10000SP and Level 4
Third Grenade - 20000SP and Level 7
Armor Ability:
Jetpack - Free
Invisibility - 5000SP and Level 2
Forerunner Vision - 15000SP and Level 4
Hologram - 2000SP and Level 6
Other AA - 35000SP and Level 10
Perks:
None- Default
Trooper - 1 more clip for secondary weapon - 1000SP and Level 0
Animal - 15% increase in Sprint time - 3000 and Level 3
Angel - 15% increase in thruster time - 10000 and Level 5
Tyrant - 15% increase in armor ability usage - 15000 and Level 7
Regenerator - 15% increase in armor ability regeberation - 15000SP and Level 7
Medic - Shields regenerate 20% faster - 20000 and Level 8
Hybrid - spawn with a plasma and a frag grenade if both unlocked - 30000 and Level 11
Soldier - spawn with 1 extra clip for your primary weapon - 60000 and Level 14
This will get you tp keep playing and unlock more equipment and abilities even after you pass levels. It will still take a while to unlock everything.