"agent progression deep and meaningful," and these apply permanently.
Tier 2 guards are also introduced and have more health, deadlier weapons and they'll increase their variety in later updates. Klei have also thrown in a tutorial to "lower the insane learning curve".
The team have unleashed a wave of balance changes as well in this ninth alpha update.
"In general, this update focuses on new depth for agents in the form of augments while creating greater challenges by forcing the agents to be more careful in their play. Guards are tougher, but you have more options to deal with them," Klei on the official forum. We can now also hide, increasing our stealth options.
"A tutorial has been started to help lower the insane learning curve we've built up. For many of you seasoned players, it will just reveal what you've already sweat blood for, but for a few of you it may have a nugget here or there that you didn't know about because we just hadn't done a good job explaining it yet."
Check out thefor the ninth update changelog.