As someone who has great memories of playing The Last Stand series on flash where it ranked amongst the greatest flash games on the internet, the legacy collection did not live up to the nostalgia for a variety of reasons.
There were still the gameplay and visual bugs (not being able to move after swapping weapons with buddy and zombies without the walking animation, getting hurt after travelling to a new area), sometimes unoptimized performance which produced lag spikes, and developer oversights that did not get patched out such as incorrect pronouns when playing as a custom female players in Union City. Con Artist mostly ported and compiled the original games with a main menu interface, achievements and slapped a price tag on it.

You can still play the The Last Stand original series on the Newgrounds player (or other flash player substitute) which just performs as well as the Steam version. If you want to support Con Artist by buying the legacy collection, wait for a sale because full price does not justify the quality of the game.

The Warfare Legacy collection proved Con Artist could do a proper remaster, by enhancing visuals, performance, gameplay, bug fixing, and adding a new game mode, which could have been the case for The Last Stand collection. I do appreciate that Con Artist still stick to their roots and continued TLS series with Aftermath, and remastered their Warfare series for returning and new players alike.

As someone who has great memories of playing The Last Stand series on flash where it ranked amongst the greatest flash games on the internet, the legacy collection did not live up to the nostalgia for a variety of reasons. There were still the gameplay and visual bugs (not being able to move after swapping weapons with buddy and zombies without the walking animation, getting hurt after travelling to a new area), sometimes unoptimized performance which produced lag spikes, and developer oversights that did not get patched out such as incorrect pronouns when playing as a custom female players in Union City. Con Artist mostly ported and compiled the original games with a main menu interface, achievements and slapped a price tag on it. You can still play the The Last Stand original series on the Newgrounds player (or other flash player substitute) which just performs as well as the Steam version. If you want to support Con Artist by buying the legacy collection, wait for a sale because full price does not justify the quality of the game. The Warfare Legacy collection proved Con Artist could do a proper remaster, by enhancing visuals, performance, gameplay, bug fixing, and adding a new game mode, which could have been the case for The Last Stand collection. I do appreciate that Con Artist still stick to their roots and continued TLS series with Aftermath, and remastered their Warfare series for returning and new players alike.