Charge #3 seems to happen without the charge icon appearing, and it doesn't affect the count.If you enter a room with 3 charge points or more, The Battery in V1.5 (the store retail version with Wrath of the Lamb included) will give you #6 a lot sooner than usual, and reset the counter, allowing a further three charges, enabling item use in every room, if you have the patience.Wrath of the Lamb made it so that Curse Rooms only damage your character as he left them (usually, damage is received when entering AND when leaving the room).The second update to Wrath of the Lamb removed this bug entirely. However, the expansion Wrath of the Lamb made the glitch even more game-breaking by including more items that gave flight, as well as advanced Challenge Rooms that always gave a major item. This glitch was around since the game came out, to the point where it may have become an Ascended Glitch. In addition to allowing a player to enter Challenge Rooms without full health, it also allowed players to pick up the item in the room and then leave without fighting any enemies. It was possible to enter and exit Challenge Rooms at any time as long as your character could fly.Wrath of the Lamb had, and may still have, a glitch where secret items don't need to be unlocked to be found.This made it way more dramatic than the standard 'Dark World Boss' theme. Before it was patched, the final boss fight against Isaac himself bugged out and had no music at all.This also works for other rooms such as secret rooms. If you leave without killing it, the room will reset, allowing you to fight the boss again and get its item.

A similar glitch that is currently not patched is using a Portable Slot in a boss room after the boss is defeated, and getting a fly to buzz around the room.Before it was patched, when using Lemon Mishap after defeating a boss and leaving the room through the door, re-entering the room would allow you to fight him again, earning you an extra item.Such as the Bobby Bomb powerup, which makes your bombs move towards the nearest enemy.

This means that certain powerups which alter player bombs also affect his.

Wrath's bombs are treated as player bombs in order to make them pushable.

This could be extended even further if you find multiple Temperance cards on one level.

On the less spectacular but more exploitable end of the scale, if you use the Temperance card to create a blood donation machine right next to one that was already there, you can use the mercy invincibility from touching one to activate the other without taking damage, doubling the rate of payout per heart.Defeating the Headless Horseman will sometimes unlock Little Chad and the connected achievement, even if you haven't cleared the Caves enough times to even unlock Chad himself.

The binding isaac platinum