Dispersion Pistol Powerup

The Dispersion Pistol Powerup is an item found in Unreal. It is essentially a battery which upgrades your Dispersion Pistol's capability of inflicting damage upon enemies.

Description
You can upgrade your weapon with the power up 4 times by picking up 4 of these power-ups.
 * With the first one, the pistol can shoot a yellow projectile and it gets a modification (a hole appears in the middle of the weapon). The maximum amount of ammunition is upgraded from 50 to 60.
 * With the second one, the pistol shoots a green projectile and the weapon gets modified with a tube in the previously mentioned hole. Maximum ammo is now 70.
 * With the third one, the pistol shoots a red projectile and the weapon evolves with 2 extra power batteries. Maximum ammo is now 80.
 * The last upgrade causes the pistol to shoot orange projectiles. The weapon gets 4 iron sensors on the tube, and it carries a maximum ammo of 90.
 * If you pick up more, no upgrades will be given, but your ammo will be instantly filled up to the maximum.

Every upgrade will slow the pistol down.