1. Put all .amxx files to plugins directory (.../amxmodx/plugins/)
2. Open the plugins.ini file located in the configs directory (.../amxmodx/configs/plugins.ini)
3. Copy and paste this to the plugins.ini

; Upgrades Mod Base
Upgrades.amxx

; Upgrades Mod Items
Item_HpRegen.amxx
Item_UnlimitedAmmo.amxx
Item_NoRecoil.amxx
Item_BunnyHop.amxx
Item_Pointer.amxx
Item_StealthShoes.amxx
Item_BattleAura.amxx
Item_TrueArmor.amxx
Item_LongJump.amxx
Item_Crowbar.amxx
Item_ClimbingGear.amxx
Item_SunGlasses.amxx
Item_PerfectAim.amxx
Item_ESP.amxx
Item_ScoutAutoShoot.amxx
Item_Bullseye.amxx
Item_BulletProofVest.amxx
Item_FallProtection.amxx
Item_Lasermine.amxx
Item_GrenadeTrap.amxx
Item_SuperPump.amxx
Item_MultiJump.amxx