During the battle with Collosus if you ride the elevator up one floor and then back down. If you stay in the back corner of the elevator no bugs should attack you and Collosus' attacks only with his laser which can't hit you. To reload faster, press the reload button, then right after, switch to another weapon then switch back instantly, your clip should be full now. Bonus level Beat the game once These weapon drops when you kill the boss. Judgement - Beat Sector 2 City boss - Enforcer Inferno - Beat Sector 2 Base boss - Colossus Onslaught - Beat the boss on Infinity mode level 10 Vulcan - Beat the boss on Infinity mode level 20 Neutron Gun - Beat the boss on Infinity mode level 30 Trident - Beat the boss on Infinity mode level 60 Copperhead - Beat Sector 2 Ruins Boss - Mantis Defeate bosses in the infinity sector to unlock armour Surge Helm - Defete lvl 40 boss: Mantis Blast Helm - Defeate lvl 50 boss: Enforcer