In Act Two after you rescue Beast on Mikhail's Warship, Blink will open a portal back to Avalon. Go through the portal to Avalon then immediately return to the warship. The scene of rescuing Beast will play again, and the ship will be undamaged. You can go back and get all the items again. Repeat this as many times as desired. Additionally, to get easy Techbits, health packs, energy packs, and items, return to the top of Apocalypse's tower where you fight Archangel. Smash all of the containers to get random free items. Repeat this as many times as desired.