Stealth Slash Pickup Weapon

This is a weapon that can be picked up on the level.

- When this weapon is activated, the user turns invisible for a time, and is able to activate the weapon once again to actually attack

- The primary and secondary activations together constitute a single use of the weapon for purposes of ammo expenditure

- After the primary activation, the user instantly enters stealth-mode and only exits this mode when killed, using the secondary activation to attack, using some other attack, or after a time duration expires

- While in stealth-mode, the character cannot be seen by anyone, except for periodically becoming visible briefly (appearing for about 0.5 seconds once every 3 seconds)

- While in stealth-mode, the character does not claim new tiles by walking, but the game keeps track of the tiles he would have claimed by walking

- When stealth-mode ends, all the tiles that would have been claimed by walking during stealth-mode are now claimed and highlighted as if the player had just walked over all of them (this is likely the most reliable way to build a long highlight trail, since they are all highlighted in an instant)

- An unseen character may be affected by attacks as normal, but being damaged does not disrupt the invisibility in any way aside from the obvious clue of a projectile exploding when it strikes the invisible character

- While a character is unseen, any particle effects on the character are also invisible, but become briefly visible during the periodic moments when the character becomes visible

- While in stealth-mode, a character cannot be targeted for attack by anything besides a player (turrets cannot target this character)

- The secondary activation is an attack, which appears as a circular spinning slash with an energy sword, striking all enemies within a certain radius of the user

- Any enemy players struck by the slash lose all their claimed and highlighted tiles, with the tiles reverting to unclaimed status

- The user also claims any tiles within the slash radius

- Stealth-mode ends when the slash is used (the player appears and then slashes, and then tiles are claimed by the end of stealth-mode)

- The slash instantly destroys any turret or projectile it strikes

- A player struck by the slash does not lose ownership of tiles occupied by his turrets

- A player struck by the slash does lose ownership of tiles ignited by his ground worm, although these tiles remain ignited and thus cannot be claimed by the player's enemies

- If a player uses the primary activation to enter stealth-mode, but picks up a replacement weapon before activating the slash, then the player retains the normal benefits of stealth-mode, but the new weapon replaces his ability to use the slash

- Using enhanced attack on this weapon will improve both the stealth-mode and the slash with a single enhance usage

- Enhanced stealth-mode will let the player run faster (which likely results in a much longer highlighted tile trail for the player when the stealth-mode ends)

- Players struck by the enhanced slash will take more damage, and all their turrets, ground worms, and ignite effects are destroyed (any tiles that would have been protected from loss by an occupying turret are lost when the turret is destroyed)

- The role of the stealth slash is to destroy the leading player's tile and turret advantage without having to kill him, as well as reliably building up a trail of highlighted tiles and providing some safety from attack