Coming out on the 15th/16th I believe (next few days).
GMG has 25% off digital purchases with this voucher GMG25-0YUM6-VKMVU,
will bring the game down to around 15 bucks (RRP is 19.99)
http://www.greenmangaming.com/s/au/en/pc/games/action/assass…
Not sure if this one installs to steam? I assume it would but cannot find any clarification.
Looks like someone posted this as a deal last year, but the code has changed.