Build 1.4 is now live and includes the following:
Fixes
- fix for enemies walking into crates and partially destructed walls
New features/improvements
- explosive crates ːsteamhappyː
- level tweaks, mostly to add explosive crates, but a few other small ones as well (Apartment, City, Forest, Cave, Desert, Alien Ship, Ascent)
- bouncier critters
- textured BG and more lighting in Apartment level
Be sure to consult the "Known issues" discussion topic for a list of known issues introduced in previous builds: http://steamcommunity.com/app/395550/discussions/0/405693392908171145/