Amplitude offers an \"Export Data\" button in the project settings page. This can export up to 365 days of events (up to 4GB per export), where the export is a zip file containing *.json.gz gzipped newline-delimited JSON.
You can export multiple times, so if you have more than a year of events you can export them by specifying different date ranges. It's OK to overlap these ranges as each event has a uniue uuid that can be used to de-duplicate them.
Here's how to import that into a SQLite database using sqlite-utils:
unzip export # The exported file does not have a .zip extension for some reason\ncd DIRECTORY_CREATED_FROM_EXPORT\ngzcat *.json.gz | sqlite-utils insert amplitude.db events --nl --alter --pk uuid --ignore -\nSince we are using --pk uuid and --ignore it's safe to run this against as many exported *.json.gz files as you like, including exports that overlap each other.
Then run datasette amplitude.db to browse the results.